{"id":24196,"date":"2026-09-22T12:09:21","date_gmt":"2026-09-22T12:09:21","guid":{"rendered":"https:\/\/lite14.net\/blog\/?p=24196"},"modified":"2026-09-22T12:09:21","modified_gmt":"2026-09-22T12:09:21","slug":"how-multi-threaded-extraction-tools-save-you-time","status":"publish","type":"post","link":"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/","title":{"rendered":"How Multi-Threaded Extraction Tools Save You Time"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#How_Multi-Threaded_Extraction_Tools_Save_You_Time_Methods_Benefits_and_Case_Study\" >How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Introduction\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#1_Understanding_Sequential_Extraction\" >1. Understanding Sequential Extraction<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#How_Multi-Threaded_Extraction_Tools_Save_You_Time_Methods_Benefits_and_Case_Study-2\" >How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Introduction-2\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#2_What_Is_Multi-Threading\" >2. What Is Multi-Threading?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#3_Why_Extraction_Tasks_Often_Benefit_From_Concurrency\" >3. Why Extraction Tasks Often Benefit From Concurrency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#4_Basic_Architecture_of_a_Multi-Threaded_Extractor\" >4. Basic Architecture of a Multi-Threaded Extractor<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Task_queue\" >Task queue<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Worker_threads\" >Worker threads<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Extraction_engine\" >Extraction engine<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Validation_layer\" >Validation layer<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Result_store\" >Result store<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Error_manager\" >Error manager<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-15\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#5_How_Multi-Threading_Saves_Time\" >5. How Multi-Threading Saves Time<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-16\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#6_Multi-Threading_Versus_Multi-Processing\" >6. Multi-Threading Versus Multi-Processing<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-17\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Multi-threading\" >Multi-threading<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-18\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Multi-processing\" >Multi-processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-19\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Asynchronous_processing\" >Asynchronous processing<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-20\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#7_The_Importance_of_Concurrency_Limits\" >7. The Importance of Concurrency Limits<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-21\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#8_Rate_Limiting\" >8. Rate Limiting<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-22\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#9_Queue-Based_Processing\" >9. Queue-Based Processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-23\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#10_Error_Handling\" >10. Error Handling<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-24\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#11_Deduplication\" >11. Deduplication<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-25\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#12_Thread_Safety\" >12. Thread Safety<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-26\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#13_Measuring_Performance\" >13. Measuring Performance<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-27\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Case_Study_Multi-Threaded_Extraction_for_a_Market_Research_Project\" >Case Study: Multi-Threaded Extraction for a Market Research Project<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-28\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#14_Background\" >14. Background<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-29\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#15_Introducing_Controlled_Concurrency\" >15. Introducing Controlled Concurrency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-30\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#16_Increasing_the_Worker_Count\" >16. Increasing the Worker Count<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-31\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#17_Results\" >17. Results<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-32\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#18_Quality-Control_Improvements\" >18. Quality-Control Improvements<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-33\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#19_Time_Saved\" >19. Time Saved<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-34\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#20_Limitations_of_Multi-Threaded_Extraction\" >20. Limitations of Multi-Threaded Extraction<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-35\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#CPU-intensive_tasks\" >CPU-intensive tasks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-36\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Network_limitations\" >Network limitations<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-37\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Server_restrictions\" >Server restrictions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-38\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Memory_consumption\" >Memory consumption<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-39\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Synchronization_overhead\" >Synchronization overhead<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-40\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Data_quality\" >Data quality<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-41\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#21_Best_Practices\" >21. Best Practices<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-42\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Start_conservatively\" >Start conservatively<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-43\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Respect_access_policies\" >Respect access policies<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-44\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Use_queues\" >Use queues<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-45\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Handle_errors_independently\" >Handle errors independently<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-46\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Record_failures\" >Record failures<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-47\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Validate_results\" >Validate results<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-48\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Deduplicate\" >Deduplicate<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-49\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Monitor_performance\" >Monitor performance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-50\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Protect_data\" >Protect data<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-1'><a class=\"ez-toc-link ez-toc-heading-51\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#History_of_How_Multi-Threaded_Extraction_Tools_Save_You_Time\" >History of How Multi-Threaded Extraction Tools Save You Time<\/a><ul class='ez-toc-list-level-2' ><li class='ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-52\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Introduction-3\" >Introduction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-53\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#1_Early_Computer_Processing\" >1. Early Computer Processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-54\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#2_The_Development_of_Multitasking\" >2. The Development of Multitasking<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-55\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#3_The_Emergence_of_Threads\" >3. The Emergence of Threads<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-56\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#4_The_Growth_of_Computer_Networks\" >4. The Growth of Computer Networks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-57\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#5_The_World_Wide_Web_and_Data_Extraction\" >5. The World Wide Web and Data Extraction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-58\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#6_The_Problem_With_Sequential_Extraction\" >6. The Problem With Sequential Extraction<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-59\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#7_Multi-Core_Processors\" >7. Multi-Core Processors<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-60\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#8_Multi-Threading_in_Extraction_Software\" >8. Multi-Threading in Extraction Software<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-61\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#9_The_Importance_of_IO-Bound_Workloads\" >9. The Importance of I\/O-Bound Workloads<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-62\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#10_The_Development_of_Web_Scraping_Frameworks\" >10. The Development of Web Scraping Frameworks<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-63\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#11_Rate_Limiting_and_Responsible_Concurrency\" >11. Rate Limiting and Responsible Concurrency<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-64\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#12_Queue-Based_Architecture\" >12. Queue-Based Architecture<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-65\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#13_Error_Handling_and_Parallel_Processing\" >13. Error Handling and Parallel Processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-66\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#14_Thread_Safety\" >14. Thread Safety<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-67\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#15_Multi-Threading_Versus_Multi-Processing\" >15. Multi-Threading Versus Multi-Processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-68\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#16_The_Rise_of_Asynchronous_Programming\" >16. The Rise of Asynchronous Programming<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-69\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#17_Cloud_Computing\" >17. Cloud Computing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-70\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#18_Case_Study_A_Hypothetical_Research_Project\" >18. Case Study: A Hypothetical Research Project<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-71\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Phase_One_Sequential_processing\" >Phase One: Sequential processing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-72\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Phase_Two_Ten_concurrent_workers\" >Phase Two: Ten concurrent workers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-73\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Phase_Three_Twenty_workers\" >Phase Three: Twenty workers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-74\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Phase_Four_Forty_workers\" >Phase Four: Forty workers<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-75\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#19_Why_the_Fastest_Configuration_Is_Not_Always_the_Best\" >19. Why the Fastest Configuration Is Not Always the Best<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-76\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#20_The_Role_of_Data_Quality\" >20. The Role of Data Quality<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-77\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#21_Modern_Artificial_Intelligence\" >21. Modern Artificial Intelligence<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-78\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#22_Security_and_Governance\" >22. Security and Governance<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-79\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#23_Future_Development\" >23. Future Development<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-80\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/#Conclusion\" >Conclusion<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n<h1 class=\"x1yc453h xngnso2 x7amdea x1i21sxh xhacrq1 x1iykcro x1mshyef x1fie51u xgyxj25 x1xobyvs x1fv8qjw xdj266r x1alsn5q x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"How_Multi-Threaded_Extraction_Tools_Save_You_Time_Methods_Benefits_and_Case_Study\"><\/span>How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Introduction\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern businesses and research organizations often need to process large quantities of online information. Data may need to be collected from webpages, documents, directories, catalogs, public business resources, or other authorized sources. When information is processed sequentially, each task must generally wait for the previous task to finish. As the volume of data increases, this approach can become slow and inefficient.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threaded extraction is one approach to improving processing speed. Instead of handling every task one after another, a program divides the workload into multiple smaller tasks that can be processed concurrently. This can significantly reduce the time required for large extraction projects, particularly when individual tasks spend considerable time waiting for network responses or other input\/output operations.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The basic principle is simple:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Sequential extraction:<\/strong> Task 1 \u2192 Task 2 \u2192 Task 3 \u2192 Task 4<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Concurrent extraction:<\/strong> Task 1 + Task 2 + Task 3 + Task 4<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">However, multi-threading is not simply a matter of creating as many threads as possible. Excessive concurrency can overwhelm a website, exhaust system resources, increase errors, create duplicate results, or violate service policies. Effective extraction therefore combines concurrency with rate control, error handling, deduplication, validation, and responsible access practices.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This article explains how multi-threaded extraction tools save time, how the technology works, the factors that influence performance, and how a hypothetical organization can apply it responsibly.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"1_Understanding_Sequential_Extraction\"><\/span>1. Understanding Sequential Extraction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">To understand the benefit of multi-threading, it is useful to begin with sequential processing.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Suppose a researcher has 1,000 authorized webpages to process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A sequential program might:<\/p>\n<section class=\"x10ri7zb x1d5dutw x1j6x5gx x1ovrblm xrvj5dj x1nktip0 x1mkdm3x xh8yej3 xc8icb0 x19ekbn6 x1xobyvs x1fv8qjw x1a024ua xqsupf2 x193iq5w xeuugli x7giv3 x1n2onr6 x1360ta\" data-assistant-content-reference=\"\" data-assistant-shared-block=\"writing\" data-assistant-shared-block-ref=\"46217\" data-assistant-writing-block=\"\" data-content-reference-type=\"client_defined_widget\" data-conversation-component=\"writing\" data-writing-block-id=\"46217\" data-writing-block-variant=\"document\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"1\">\n<header class=\"x6s0dn4 x78zum5 x1xy1v1n x1qughib x13gjtz1 x25l49s x1r09zhg xfqlf79\" data-conversation-part=\"header\"><span class=\"x1ir3puv x123onwq x1gqwrcx x8r4c90 xeuugli xb3r6kr xlyipyv xuxw1ft\" data-assistant-writing-block-title=\"\">How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study<\/span><\/p>\n<div class=\"x6s0dn4 x78zum5 xxhr3t\" data-conversation-part=\"controls\"><\/div>\n<\/header>\n<div class=\"xvklg7n x1jchvi3 x14nib4c x17qorbb x1a2a7pz x32akso xb405pp x1rlenzs x1xk3k8f x1pgvndj\" role=\"textbox\" aria-label=\"Writing\" data-assistant-writing-block-content=\"\" data-conversation-part=\"body\" data-writing-block-content=\"\">\n<h1 class=\"x1yc453h xngnso2 x7amdea x1i21sxh xhacrq1 x1iykcro x1mshyef x1fie51u xgyxj25 x1xobyvs x1fv8qjw xdj266r x1alsn5q x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"How_Multi-Threaded_Extraction_Tools_Save_You_Time_Methods_Benefits_and_Case_Study-2\"><\/span>How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Introduction-2\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern businesses and research organizations often need to process large quantities of online information. Data may need to be collected from webpages, documents, directories, catalogs, public business resources, or other authorized sources. When information is processed sequentially, each task must generally wait for the previous task to finish. As the volume of data increases, this approach can become slow and inefficient.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threaded extraction is one approach to improving processing speed. Instead of handling every task one after another, a program divides the workload into multiple smaller tasks that can be processed concurrently. This can significantly reduce the time required for large extraction projects, particularly when individual tasks spend considerable time waiting for network responses or other input\/output operations.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The basic principle is simple:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Sequential extraction:<\/strong> Task 1 \u2192 Task 2 \u2192 Task 3 \u2192 Task 4<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Concurrent extraction:<\/strong> Task 1 + Task 2 + Task 3 + Task 4<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">However, multi-threading is not simply a matter of creating<\/p>\n<\/div>\n<\/section>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"2\">If each page requires an average of one second to retrieve and process, the theoretical processing time could approach 1,000 seconds, excluding other overhead.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The computer may spend much of that time waiting for network responses.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This is where concurrency becomes useful.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"2_What_Is_Multi-Threading\"><\/span>2. What Is Multi-Threading?<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threading allows a program to execute multiple threads of work concurrently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A thread can be thought of as an independent path of execution within a program.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of having one worker process all 1,000 pages, a system might have several workers processing different pages.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Worker 1 \u2192 Pages 1\u2013100<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Worker 2 \u2192 Pages 101\u2013200<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Worker 3 \u2192 Pages 201\u2013300<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">and so on.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The exact improvement depends on the workload, network conditions, server response time, CPU capacity, and concurrency limit.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For network-heavy extraction, multiple concurrent workers can keep the system productive while individual requests are waiting for responses.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"3_Why_Extraction_Tasks_Often_Benefit_From_Concurrency\"><\/span>3. Why Extraction Tasks Often Benefit From Concurrency<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Many extraction workloads are <strong class=\"x7amdea\">I\/O-bound<\/strong>.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This means that a significant portion of the processing time is spent waiting for external operations, such as:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"3\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Network responses.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">File reads.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Database operations.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Remote service responses.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Storage operations.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"4\">Consider a webpage request.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The computer sends a request and then waits for the remote server to respond.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">During that waiting period, the CPU may have relatively little work to perform.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A multi-threaded system can use that waiting time to process another task.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This is one of the principal reasons concurrency can improve extraction speed.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"4_Basic_Architecture_of_a_Multi-Threaded_Extractor\"><\/span>4. Basic Architecture of a Multi-Threaded Extractor<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A simple multi-threaded extraction system can contain several components.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Task_queue\"><\/span>Task queue<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The queue contains URLs or other authorized resources waiting to be processed.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Worker_threads\"><\/span>Worker threads<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each worker retrieves a task from the queue and processes it.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Extraction_engine\"><\/span>Extraction engine<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The engine identifies the required information.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Validation_layer\"><\/span>Validation layer<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The extracted information is checked for obvious errors.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Result_store\"><\/span>Result store<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Results are written to a file, database, or other storage system.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Error_manager\"><\/span>Error manager<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Failed tasks are recorded for later review or controlled retry.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The overall workflow becomes:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Input \u2192 Queue \u2192 Workers \u2192 Extraction \u2192 Validation \u2192 Storage<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This architecture makes large-scale processing easier to manage.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"5_How_Multi-Threading_Saves_Time\"><\/span>5. How Multi-Threading Saves Time<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The primary advantage is reduced waiting time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Suppose a project contains 600 authorized pages and each page requires approximately two seconds of network waiting.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">With sequential processing, the theoretical network-wait component is approximately:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">600 \u00d7 2 seconds = 1,200 seconds<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">That is approximately 20 minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">If the workload can safely be processed with ten concurrent workers, the theoretical waiting component could approach:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">1,200 \u00f7 10 = 120 seconds<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">or approximately two minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Actual performance will be lower than this idealized calculation because of scheduling, server behavior, processing time, failures, connection overhead, and concurrency limits.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Nevertheless, the example demonstrates why parallel processing can produce substantial time savings.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"6_Multi-Threading_Versus_Multi-Processing\"><\/span>6. Multi-Threading Versus Multi-Processing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threading is not the only method of parallel processing.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Multi-threading\"><\/span>Multi-threading<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Threads share the memory space of a process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This can make communication between workers relatively efficient.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">It is often useful for I\/O-heavy workloads.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Multi-processing\"><\/span>Multi-processing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multiple independent processes are created.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This can be useful for CPU-intensive workloads because separate processes can execute computational work independently.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Asynchronous_processing\"><\/span>Asynchronous processing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Asynchronous systems can manage many waiting operations without necessarily creating one traditional thread for every task.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For large network workloads, asynchronous approaches can sometimes be more resource-efficient.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The best approach depends on the characteristics of the extraction task and the programming environment.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"7_The_Importance_of_Concurrency_Limits\"><\/span>7. The Importance of Concurrency Limits<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">More threads do not automatically mean more speed.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Suppose a system increases from ten workers to 1,000 workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The target service may respond more slowly, reject requests, or impose rate limits.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The local computer may also experience:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"5\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">High memory usage.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Connection exhaustion.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Increased context switching.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">CPU overhead.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">More failures.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"6\">Consequently, responsible systems use controlled concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A practical design may start with a modest number of workers and measure performance.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The goal is not maximum concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The goal is <strong class=\"x7amdea\">efficient concurrency within appropriate resource and access limits<\/strong>.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"8_Rate_Limiting\"><\/span>8. Rate Limiting<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Rate limiting controls how frequently requests are made.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, a system might limit the number of requests sent to a particular host within a given period.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Rate limiting is useful for both technical and responsible reasons.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Technically, it can reduce:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"7\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Connection failures.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Server errors.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Local resource consumption.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"8\">From an access perspective, it helps prevent an extraction system from generating an excessive request load.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Where a service provides explicit API limits or access policies, those limits should be respected.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"9_Queue-Based_Processing\"><\/span>9. Queue-Based Processing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A queue is one of the most useful structures in a multi-threaded extraction system.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of assigning a fixed group of URLs to each worker, all tasks can be placed in a shared queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Workers take tasks as they become available.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Queue:<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Page A<br \/>\nPage B<br \/>\nPage C<br \/>\nPage D<br \/>\nPage E<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Five workers can take tasks independently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">When Worker 1 finishes Page A, it can take Page F.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This approach is efficient because tasks rarely take exactly the same amount of time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A slow page does not necessarily prevent other workers from continuing.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"10_Error_Handling\"><\/span>10. Error Handling<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Large extraction projects inevitably encounter errors.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A webpage may be temporarily unavailable.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A network connection may fail.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A document may contain unexpected HTML.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A server may return an error.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A robust multi-threaded extractor should isolate failures.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">If Worker 3 encounters an error, Workers 1, 2, and 4 should normally be able to continue processing their tasks.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Failed items can be placed into an error queue for later review.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Controlled retries may be appropriate for temporary failures, but repeated aggressive retries can increase load and make the situation worse.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"11_Deduplication\"><\/span>11. Deduplication<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Parallel processing can create duplicate work if the system is poorly designed.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, the same URL could accidentally enter the queue twice.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A shared tracking mechanism can help ensure that a task is processed only once.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">At the result level, deduplication is also important.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The same extracted record may appear on multiple pages.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A database can maintain unique identifiers or normalized values to prevent accidental duplication.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"12_Thread_Safety\"><\/span>12. Thread Safety<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threaded programs introduce synchronization issues.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Several workers may attempt to modify the same resource simultaneously.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, two workers could attempt to update the same output file at the same time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This can produce corrupted or inconsistent results.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Thread-safe queues, locks, transactions, and appropriate database mechanisms can help prevent such problems.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A well-designed extractor therefore considers both performance and data integrity.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"13_Measuring_Performance\"><\/span>13. Measuring Performance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A useful extraction system should measure its own performance.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Important metrics include:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"9\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Pages processed per minute.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Successful requests.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Failed requests.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Average response time.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Average extraction time.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Duplicate rate.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Validation failure rate.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">CPU usage.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Memory usage.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"10\">These measurements allow researchers to determine whether increasing concurrency actually improves the workflow.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, moving from five to ten workers might significantly improve performance.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Increasing from 50 to 100 might provide little additional benefit while increasing errors.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Measurement is therefore more useful than guessing.<\/p>\n<h1 class=\"x1yc453h xngnso2 x7amdea x1i21sxh xhacrq1 x1iykcro x1mshyef x1fie51u xgyxj25 x1xobyvs x1fv8qjw xdj266r x1alsn5q x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Case_Study_Multi-Threaded_Extraction_for_a_Market_Research_Project\"><\/span>Case Study: Multi-Threaded Extraction for a Market Research Project<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"14_Background\"><\/span>14. Background<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Consider a fictional market-research company conducting a study of publicly available business information from authorized sources.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The organization needs to process <strong class=\"x7amdea\">12,000 webpages<\/strong> and identify selected business fields.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The project includes:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"11\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Company name.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Industry category.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Public organizational contact information where relevant.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Website.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Source URL.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"12\">The company initially uses a sequential extraction process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each page requires approximately 1.5 seconds on average to retrieve and process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This produces a theoretical baseline of:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">12,000 \u00d7 1.5 seconds = 18,000 seconds<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">That is approximately <strong class=\"x7amdea\">5 hours<\/strong>.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The actual duration may be longer because of network variability and failures.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"15_Introducing_Controlled_Concurrency\"><\/span>15. Introducing Controlled Concurrency<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The company redesigns the system using ten worker threads.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The workload is placed into a shared queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each worker retrieves a task, processes it, validates the result, and then retrieves another task.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Under ideal conditions, the network-wait component could theoretically be reduced substantially.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">However, the team does not assume a tenfold speed increase.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead, it conducts a controlled benchmark.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The researchers discover that the ten-worker system processes the dataset in approximately <strong class=\"x7amdea\">45 minutes<\/strong>.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This represents a major improvement over the original five-hour baseline.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The improvement is not exactly tenfold because some operations remain sequential and because network response times vary.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"16_Increasing_the_Worker_Count\"><\/span>16. Increasing the Worker Count<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team then tests 20 workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing time falls to approximately 32 minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team tests 40 workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing time falls only slightly further, to approximately 29 minutes, while the number of temporary failures increases.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The researchers therefore decide that 20 workers provide a better balance.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This illustrates an important lesson:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">The fastest configuration is not necessarily the configuration with the most threads.<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A practical system must consider reliability as well as raw processing time.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"17_Results\"><\/span>17. Results<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The hypothetical project produces the following benchmark:<\/p>\n<div class=\"x1vl9vab x16b51yi xrrwrwc x16k8ytd x1qmfsro xma8rkl x17w79hz x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a6c18u x1ynbexh x1pjt2rx x160d6zm xqsupf2 xy12xjr xvqhs1v x1nwkakj x1ink2cp x1n2onr6\" dir=\"auto\" data-assistant-markdown-table=\"\" data-assistant-table=\"\">\n<div class=\"xfk6m8 x1k33914 x8ofoeg xxf1yix xh8yej3 xw2csxc x1pqk8vl x7p5m3t x1rlenzs xi6raib x1rohswg\" data-assistant-markdown-table-scroller=\"\">\n<table class=\"x1vathgz x1gukg7c x11r6d5e x123onwq xezivpi x17mssa0 x1ghz6dp x1x1rfll xgqtt45 x1rea2x4\">\n<thead>\n<tr>\n<th class=\"xpps94y x1q0q8m5 xso031l xbs2zpe x7amdea xl2ypbo x26vrf4 x9rjddi xibp4oe x1c1uobl x1yc453h\">Configuration<\/th>\n<th class=\"xpps94y x1q0q8m5 xso031l xbs2zpe x7amdea xl2ypbo x26vrf4 x9rjddi xibp4oe x1c1uobl x1yc453h\">Processing time<\/th>\n<th class=\"xpps94y x1q0q8m5 xso031l xbs2zpe x7amdea xl2ypbo x26vrf4 x9rjddi xibp4oe x1c1uobl x1yc453h\">Error rate<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">Sequential<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">5 hours<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">Low<\/td>\n<\/tr>\n<tr>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">10 workers<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">45 minutes<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">Low<\/td>\n<\/tr>\n<tr>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">20 workers<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">32 minutes<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">Moderate-low<\/td>\n<\/tr>\n<tr>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">40 workers<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">29 minutes<\/td>\n<td class=\"xsfyl8r x1q0q8m5 xso031l x1dre2lj xbs2zpe x15n2anh xme8oex x1xro15f x9rjddi x5xtxb0 x1c1uobl x1yc453h\">Higher<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p><button class=\"x1y0btm7 x9f619 xln7xf2 x17j2mab xc0rdgb xl56j7k x1q51uy1 xioxnex x2b8uid x1b2iylo xwgcxoh x1hl2dhg xtcsvct x11doy3g xwbb3bf xm5th6g x1pf1ekx x1v85zax xl65fg8 x1ysdz2l x1fo1fc9 xdsxg0b xulogpc x1cpjm7i x1btuk9t xk6xnpo x1txhlq7 xtg4hg7 x1o0wn7w xkk1bqk x1hmns74 xy5mcqj x15xj62w x9r1u3d xgwjoxm xu82sp8 x1gnnqk1 x13yhu5o x1ypdohk xrvj5dj xy5k6zg xc8icb0 x1gg8mnh x1nb6za0 xk2swo9 x1717udv x1ku5rj1 x1vjfegm x5ftvrx x1xeipyx x1ehs627 x2js1xq xwuzemt x168wqd8 x10l6tqk x130de9h\" type=\"button\" data-icon-only=\"\" data-icon-position=\"start\" data-icon-shape=\"non-circular\" data-radius=\"full\" data-size=\"small\" data-variant=\"ghost\" data-w-component=\"button\" aria-label=\"Copy table\" data-table-copy-state=\"idle\" data-oai-tooltip=\"\" data-oai-tooltip-side=\"bottom\" data-oai-tooltip-side-offset=\"8\"><\/button><\/div>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The 40-worker configuration is only slightly faster than the 20-worker configuration but produces more failures.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The organization therefore chooses 20 workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The project demonstrates that controlled concurrency can reduce processing time dramatically without unnecessarily increasing system or service load.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"18_Quality-Control_Improvements\"><\/span>18. Quality-Control Improvements<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Speed alone is not enough.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The organization introduces several additional safeguards.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each extracted record receives:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"13\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Source URL.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing timestamp.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Extraction status.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Validation status.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Error information where applicable.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"14\">Duplicates are removed after extraction.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A sample of records is manually reviewed.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Failed pages are placed into a separate queue for controlled retry.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This ensures that the faster process does not compromise data quality.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"19_Time_Saved\"><\/span>19. Time Saved<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The original workflow required approximately five hours.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The improved workflow requires approximately 32 minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The theoretical time saved is approximately:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">5 hours \u2212 32 minutes = 4 hours 28 minutes<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For a single project, that is substantial.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For recurring research conducted weekly or monthly, the accumulated savings become even more significant.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The organization can use the recovered time for:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"15\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Data analysis.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Quality control.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Research design.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Reporting.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Interpretation.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Strategic decision-making.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"16\">This is the broader value of multi-threaded extraction: it does not merely make computers work faster; it can allow researchers to spend more time on higher-value tasks.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"17\"><span class=\"ez-toc-section\" id=\"20_Limitations_of_Multi-Threaded_Extraction\"><\/span>20. Limitations of Multi-Threaded Extraction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"18\">Despite its advantages, multi-threading is not universally appropriate.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"19\"><span class=\"ez-toc-section\" id=\"CPU-intensive_tasks\"><\/span>CPU-intensive tasks<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"20\">If extraction involves complex computation rather than network waiting, additional threads may provide limited improvement depending on the programming environment.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"21\"><span class=\"ez-toc-section\" id=\"Network_limitations\"><\/span>Network limitations<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"22\">If the network connection is already saturated, additional workers cannot increase available bandwidth.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"23\"><span class=\"ez-toc-section\" id=\"Server_restrictions\"><\/span>Server restrictions<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"24\">The source may impose request limits.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"25\"><span class=\"ez-toc-section\" id=\"Memory_consumption\"><\/span>Memory consumption<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"26\">More workers can require more resources.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"27\"><span class=\"ez-toc-section\" id=\"Synchronization_overhead\"><\/span>Synchronization overhead<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"28\">Threads need to coordinate shared resources.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"29\"><span class=\"ez-toc-section\" id=\"Data_quality\"><\/span>Data quality<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"30\">Processing information faster does not automatically make the extracted information more accurate.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"31\">These limitations demonstrate why performance engineering requires measurement and testing.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"32\"><span class=\"ez-toc-section\" id=\"21_Best_Practices\"><\/span>21. Best Practices<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"33\">A reliable multi-threaded extraction system should follow several principles.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"34\"><span class=\"ez-toc-section\" id=\"Start_conservatively\"><\/span>Start conservatively<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"35\">Begin with a small number of workers and increase gradually.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"36\"><span class=\"ez-toc-section\" id=\"Respect_access_policies\"><\/span>Respect access policies<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"37\">Follow applicable terms, rate limits, authentication requirements, and other access conditions.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"38\"><span class=\"ez-toc-section\" id=\"Use_queues\"><\/span>Use queues<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"39\">A task queue provides flexible workload distribution.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"40\"><span class=\"ez-toc-section\" id=\"Handle_errors_independently\"><\/span>Handle errors independently<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"41\">One failed task should not stop the entire project.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"42\"><span class=\"ez-toc-section\" id=\"Record_failures\"><\/span>Record failures<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"43\">Keep failed tasks for controlled review or retry.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"44\"><span class=\"ez-toc-section\" id=\"Validate_results\"><\/span>Validate results<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"45\">Speed should never replace quality control.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"46\"><span class=\"ez-toc-section\" id=\"Deduplicate\"><\/span>Deduplicate<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"47\">Prevent repeated processing and duplicate output.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"48\"><span class=\"ez-toc-section\" id=\"Monitor_performance\"><\/span>Monitor performance<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"49\">Track processing time, error rates, and resource usage.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"50\"><span class=\"ez-toc-section\" id=\"Protect_data\"><\/span>Protect data<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"51\">Store extracted information securely and retain only what is necessary.<\/p>\n<h1 class=\"x1yc453h xngnso2 x7amdea x1i21sxh xhacrq1 x1iykcro x1mshyef x1fie51u xgyxj25 x1xobyvs x1fv8qjw xdj266r x1alsn5q x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"0\"><span class=\"ez-toc-section\" id=\"History_of_How_Multi-Threaded_Extraction_Tools_Save_You_Time\"><\/span>History of How Multi-Threaded Extraction Tools Save You Time<span class=\"ez-toc-section-end\"><\/span><\/h1>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Introduction-3\"><\/span>Introduction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The history of multi-threaded extraction tools is closely connected to the development of computers, networks, databases, and automated data processing. Extracting information from digital sources was originally a slow and largely sequential activity. Early computer programs generally performed one operation at a time, while data-processing tasks were frequently limited by processor speed, storage technology, and communication networks.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As the amount of digital information increased, researchers and businesses needed ways to process larger datasets more efficiently. The development of multitasking operating systems, multi-core processors, networking technologies, parallel computing, and eventually multi-threaded software created new possibilities. Instead of waiting for one operation to finish before beginning another, programs could manage multiple operations concurrently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This development became particularly valuable for extraction tasks involving webpages, databases, documents, APIs, and other network-accessible resources. Such tasks often spend substantial amounts of time waiting for data to arrive. Multi-threading allows other tasks to progress during these waiting periods, potentially reducing overall processing time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The history of multi-threaded extraction is therefore not simply a history of faster computers. It is the history of moving from <strong class=\"x7amdea\">sequential processing toward concurrent information processing<\/strong>.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"1_Early_Computer_Processing\"><\/span>1. Early Computer Processing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The earliest electronic computers were designed primarily for sequential computation.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Programs were executed as ordered instructions. A task would generally be completed before the next operation proceeded.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Early computers were also extremely expensive and had limited memory and processing capacity.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Data processing was consequently organized carefully.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Large information-processing jobs could take considerable amounts of time, and researchers often prepared data in batches.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The concept of doing multiple operations concurrently existed in early computing research, but practical systems were initially constrained by hardware limitations.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As computers became more capable, operating-system designers began developing methods for managing multiple programs and tasks.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"2_The_Development_of_Multitasking\"><\/span>2. The Development of Multitasking<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multitasking was an important step toward modern concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Operating systems learned to divide processor time among different programs or processes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A computer could therefore appear to perform several activities simultaneously.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, one program might be performing calculations while another waited for an input or output operation.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This distinction became important for extraction workloads.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A program retrieving information from a remote source often spends time waiting for a response. If the processor simply waits during that period, computing resources may remain underutilized.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multitasking provided the conceptual foundation for using those resources more efficiently.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"3_The_Emergence_of_Threads\"><\/span>3. The Emergence of Threads<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A process can contain multiple threads of execution.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Threads allow different portions of a program to make progress concurrently while sharing resources belonging to the same process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This model became increasingly important in operating systems and software development.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of launching an entirely separate program for every small task, software could create multiple threads within one application.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This reduced some of the overhead associated with separate processes and made concurrent programming more practical.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For data extraction, threads could be assigned different tasks.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Thread 1 \u2192 Resource A<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Thread 2 \u2192 Resource B<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Thread 3 \u2192 Resource C<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Rather than waiting for Resource A before beginning Resource B, the program could manage all three operations concurrently.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"4_The_Growth_of_Computer_Networks\"><\/span>4. The Growth of Computer Networks<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The development of computer networking greatly increased the importance of concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Early data-processing programs often worked with information stored locally.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern applications increasingly communicate with remote computers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The growth of local-area networks, the Internet, and the World Wide Web created enormous quantities of remotely accessible information.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A program might need to retrieve information from hundreds or thousands of resources.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Network communication introduced a new bottleneck.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The computer could process information quickly but still spend significant time waiting for remote systems to respond.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This made concurrency particularly valuable.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"5_The_World_Wide_Web_and_Data_Extraction\"><\/span>5. The World Wide Web and Data Extraction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The emergence of the World Wide Web during the 1990s created new opportunities for automated information collection.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Webpages contained large quantities of information that could be processed by software.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Early web extraction was often relatively simple.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A program might request one webpage, download the HTML, analyze it, extract information, and then move to the next page.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This sequential method worked adequately for small projects.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As the number of webpages increased, however, waiting for every network request became increasingly inefficient.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The need for faster processing contributed to the development of concurrent web extraction techniques.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"6_The_Problem_With_Sequential_Extraction\"><\/span>6. The Problem With Sequential Extraction<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Consider a simple extraction program that processes 1,000 authorized webpages.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">If each webpage requires an average of one second to retrieve, the network-waiting component alone could take approximately:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">1,000 seconds<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">or about 16 minutes and 40 seconds.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The program may spend much of this time waiting rather than actively computing.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A multi-threaded system can process several requests concurrently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, with ten workers, several webpages can be in progress at the same time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The theoretical waiting time can therefore be significantly reduced.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Actual performance depends on network conditions, source response times, processing overhead, and appropriate concurrency limits.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Nevertheless, the fundamental principle is clear:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Concurrency reduces idle waiting.<\/strong><\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"7_Multi-Core_Processors\"><\/span>7. Multi-Core Processors<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The development of multi-core processors further changed the computing landscape.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of relying exclusively on increasing the clock speed of a single processor core, manufacturers increasingly placed multiple processing cores on one chip.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This allowed computers to execute multiple computational tasks simultaneously.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-core hardware did not automatically make every program faster.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Software had to be designed to take advantage of parallelism.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Nevertheless, the widespread availability of multiple cores encouraged developers to think more carefully about concurrent execution.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Extraction systems could combine network concurrency with parallel computation.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"8_Multi-Threading_in_Extraction_Software\"><\/span>8. Multi-Threading in Extraction Software<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threaded extraction software generally divides a large workload into smaller tasks.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A simplified architecture might contain:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Task queue \u2192 Worker threads \u2192 Extraction \u2192 Validation \u2192 Results<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The task queue contains resources waiting to be processed.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Worker threads take tasks from the queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each worker retrieves and processes its assigned resource.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Once finished, it returns the result and takes another task.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This approach is more flexible than giving each worker a fixed number of resources.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">If one resource takes longer to process, other workers can continue with their own tasks.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"9_The_Importance_of_IO-Bound_Workloads\"><\/span>9. The Importance of I\/O-Bound Workloads<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">One of the main historical reasons multi-threading became useful for extraction is that many extraction tasks are I\/O-bound.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">I\/O refers to input and output operations.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Examples include:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"1\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Network requests.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">File access.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Database queries.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Remote service requests.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"2\">During an I\/O operation, the program may have little computational work to perform.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A sequential system can therefore spend significant time waiting.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A multi-threaded system can switch to another task during that waiting period.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This makes concurrency particularly valuable for extraction applications.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"10_The_Development_of_Web_Scraping_Frameworks\"><\/span>10. The Development of Web Scraping Frameworks<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As automated web extraction became more common, software libraries and frameworks began providing features for concurrent processing.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Developers could create crawlers capable of managing multiple requests.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">These systems could maintain queues of URLs, schedule requests, parse responses, and store results.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The evolution of web-crawling technology therefore moved from simple sequential scripts toward more sophisticated task-management systems.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">However, responsible crawlers also needed to consider access policies, request rates, server capacity, and other constraints.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The goal was not simply to maximize request volume.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"11_Rate_Limiting_and_Responsible_Concurrency\"><\/span>11. Rate Limiting and Responsible Concurrency<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As extraction systems became faster, a new problem emerged.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A program capable of sending many simultaneous requests could place substantial load on a remote service.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Consequently, responsible extraction systems developed rate-limiting mechanisms.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Rate limiting controls how quickly requests are sent.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A system may deliberately use fewer concurrent workers than the hardware can support.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This may appear counterintuitive, but it can produce a more stable system.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">It can reduce:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"3\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Request failures.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Timeouts.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Resource exhaustion.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Repeated retries.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"4\">It also helps ensure that authorized extraction does not create unnecessary load on external systems.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"12_Queue-Based_Architecture\"><\/span>12. Queue-Based Architecture<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Queue-based systems became an important part of large-scale extraction.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of processing a fixed list directly, tasks are placed into a queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Workers retrieve tasks from that queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The architecture can be represented as:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Input \u2192 Queue \u2192 Workers \u2192 Results<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This model has several advantages.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Workers can operate independently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Failed tasks can be placed into a separate retry queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">New tasks can be added without redesigning the entire processing system.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Results can be written to databases or files as workers finish.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Queue-based architectures therefore improved both speed and reliability.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"13_Error_Handling_and_Parallel_Processing\"><\/span>13. Error Handling and Parallel Processing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Concurrent extraction introduced new challenges.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">If one task fails, the entire process should not necessarily stop.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">For example, one webpage may be temporarily unavailable while hundreds of other webpages remain accessible.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A robust multi-threaded system isolates failures.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The failed task can be recorded and potentially retried later under controlled conditions.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This allows successful workers to continue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Historically, this was an important shift from simple scripts toward resilient extraction systems.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"14_Thread_Safety\"><\/span>14. Thread Safety<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Concurrency also introduced problems that did not occur in the same way in sequential programs.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Two threads may attempt to modify the same file, database record, or data structure simultaneously.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Without appropriate synchronization, the result may be inconsistent or corrupted.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Developers therefore introduced mechanisms such as:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"5\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Thread-safe queues.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Locks.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Transactions.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Atomic operations.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Concurrent data structures.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"6\">These technologies allowed extraction systems to achieve greater speed without sacrificing data integrity.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"15_Multi-Threading_Versus_Multi-Processing\"><\/span>15. Multi-Threading Versus Multi-Processing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">As concurrent computing developed, developers had several approaches available.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-threading uses multiple threads within a process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Multi-processing uses multiple independent processes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The distinction matters because different workloads benefit from different approaches.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">I\/O-heavy extraction can often benefit from threads because workers spend substantial time waiting.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">CPU-intensive extraction may benefit more from multiple processes, depending on the programming environment.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The historical development of extraction tools therefore involved increasingly sophisticated decisions about how to distribute work.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"16_The_Rise_of_Asynchronous_Programming\"><\/span>16. The Rise of Asynchronous Programming<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Another major development was asynchronous programming.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Instead of creating a traditional thread for every task, an asynchronous program can manage many waiting operations through an event-driven system.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This can be especially useful for large numbers of network requests.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Asynchronous programming and multi-threading are not identical, but they address a similar problem: preventing one waiting operation from unnecessarily blocking other work.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern extraction systems may combine asynchronous networking, worker pools, and parallel processing.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"17_Cloud_Computing\"><\/span>17. Cloud Computing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Cloud computing expanded the possibilities of concurrent extraction.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Organizations no longer needed to rely entirely on a single physical computer.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">They could use cloud-based computing resources to process workloads.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Large jobs could potentially be divided among multiple machines.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This created a progression:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">Single process \u2192 Multiple threads \u2192 Multiple processes \u2192 Multiple machines<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The underlying principle remained the same: divide work so that independent tasks can progress concurrently.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Cloud computing also introduced new concerns, including cost management, security, data governance, and resource monitoring.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"18_Case_Study_A_Hypothetical_Research_Project\"><\/span>18. Case Study: A Hypothetical Research Project<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Consider a fictional market-research organization that needs to process <strong class=\"x7amdea\">12,000 authorized webpages<\/strong> containing publicly available business information.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The organization initially uses a sequential extractor.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each page takes an average of 1.5 seconds to retrieve and process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The theoretical processing time is:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><strong class=\"x7amdea\">12,000 \u00d7 1.5 seconds = 18,000 seconds<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This equals approximately <strong class=\"x7amdea\">5 hours<\/strong>.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The researchers want to reduce the processing time without compromising accuracy or placing excessive load on source systems.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phase_One_Sequential_processing\"><\/span>Phase One: Sequential processing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The original system processes one page at a time.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">It is simple and relatively easy to monitor, but the five-hour processing window makes repeated research expensive.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phase_Two_Ten_concurrent_workers\"><\/span>Phase Two: Ten concurrent workers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team introduces ten workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Each worker retrieves tasks from a shared queue.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing time falls to approximately 45 minutes in the hypothetical benchmark.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The reduction occurs because multiple network operations can progress simultaneously.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phase_Three_Twenty_workers\"><\/span>Phase Three: Twenty workers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team increases concurrency to twenty workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing time falls to approximately 32 minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The improvement is significant, but not proportional to the increase in worker count.<\/p>\n<h3 class=\"x1yc453h x1c3i2sq x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"Phase_Four_Forty_workers\"><\/span>Phase Four: Forty workers<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team tests forty workers.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Processing time falls only slightly further, to approximately 29 minutes.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">At the same time, temporary failures become more frequent.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The team therefore determines that twenty workers provide a better balance between performance and reliability.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The figures in this case study are illustrative rather than measurements from a real organization.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"19_Why_the_Fastest_Configuration_Is_Not_Always_the_Best\"><\/span>19. Why the Fastest Configuration Is Not Always the Best<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The case study illustrates an important historical lesson.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Increasing concurrency does not produce unlimited speed improvements.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Several factors create diminishing returns:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"7\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Network bandwidth.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Remote response time.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Local CPU capacity.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Memory.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Connection limits.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Server-side throttling.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Synchronization overhead.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Data-processing time.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"8\">Eventually, additional workers create more overhead than useful work.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The objective is therefore not maximum concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">It is <strong class=\"x7amdea\">optimal concurrency<\/strong>.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"20_The_Role_of_Data_Quality\"><\/span>20. The Role of Data Quality<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Speed is only one measure of extraction performance.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">A system that processes 10,000 records quickly but produces inaccurate or duplicated results may be less useful than a slower system producing reliable data.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern extraction systems therefore combine concurrency with:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"9\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Validation.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Deduplication.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Error tracking.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Source recording.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Quality checks.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"10\">A sample of automatically processed results can also be reviewed manually.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">This creates a balance between automation and human oversight.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\"><span class=\"ez-toc-section\" id=\"21_Modern_Artificial_Intelligence\"><\/span>21. Modern Artificial Intelligence<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">The development of artificial intelligence has introduced another layer to extraction systems.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">AI can assist with:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"11\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Identifying entities.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Classifying documents.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Extracting structured information.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Summarizing content.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Detecting duplicates.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Identifying relationships.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"12\">A modern pipeline may therefore contain both concurrent retrieval and AI-based analysis.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"13\">For example:<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"14\"><strong class=\"x7amdea\">Concurrent retrieval \u2192 Parsing \u2192 AI classification \u2192 Validation \u2192 Storage<\/strong><\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"15\">The extraction stage becomes part of a broader information-processing pipeline.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"16\">AI does not eliminate the need for concurrency.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"17\">Instead, it can increase the amount of processing performed after information has been retrieved.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj xitg8i0 xlecmv9 x1ytk7xi\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"18\" data-streaming-stylex-tokens=\"xitg8i0 xlecmv9 x1ytk7xi\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"19\"><span class=\"ez-toc-section\" id=\"22_Security_and_Governance\"><\/span>22. Security and Governance<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"20\">As extraction systems became larger and more automated, security became increasingly important.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"21\">Data-processing systems may contain sensitive or commercially valuable information.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Modern systems therefore need to consider:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"22\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Access control.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Encryption.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Secure storage.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Audit records.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Retention policies.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Data minimization.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"23\">Responsible extraction also requires respecting applicable access permissions and platform policies.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"24\">Technical ability to retrieve information does not automatically establish permission to collect or reuse it.<\/p>\n<hr class=\"x1sy0etr x2b9quz xclthos x13fuv20 x178xt8z xkgv12d x1q8ys2x xc8tqf8 x1fie51u xgyxj25 x1xobyvs x1fv8qjw x178dpqu x1pjt2rx x160d6zm xqsupf2 xrxpjvj xitg8i0 xlecmv9 x1ytk7xi\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"25\" data-streaming-stylex-tokens=\"xitg8i0 xlecmv9 x1ytk7xi\" \/>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"26\"><span class=\"ez-toc-section\" id=\"23_Future_Development\"><\/span>23. Future Development<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"27\">The future of multi-threaded extraction is likely to involve increasingly sophisticated concurrency models.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"28\">Traditional thread pools will continue to be useful, but asynchronous processing, distributed systems, cloud computing, and intelligent scheduling can provide additional flexibility.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Systems may dynamically adjust worker counts according to:<\/p>\n<ul class=\"xonam98 x1epdd7z xemmon1 xn020vs xfl32do xluzp7q x1yc453h x38giro xat24cr x1xobyvs x1fv8qjw xdj266r xrxpjvj x1bxe5rh\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"29\">\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Response times.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Error rates.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Available resources.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Queue size.<\/p>\n<\/li>\n<li class=\"x1datfip xp5n6w9 x2xbuc6 xlty9xr xitg8i0 xlecmv9 x1ytk7xi\" data-streaming-stylex-tokens=\"xlty9xr xitg8i0 xlecmv9 x1ytk7xi\">\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\">Service limits.<\/p>\n<\/li>\n<\/ul>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"30\">Artificial intelligence may also help optimize scheduling and identify unusual failures.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"31\">The result could be extraction systems that automatically adapt their processing level rather than operating with a fixed number of workers.<\/p>\n<h2 class=\"x1yc453h x1603h9y x1gtpwm6 x7amdea x1i21sxh xladpa3 x1iykcro xma8rkl x1fie51u xgyxj25 x1xobyvs x1fv8qjw x1a024ua x14l7nz5 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"33\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclusion<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"34\">The history of multi-threaded extraction tools reflects the broader had limited resources. The development of multitasking operating systems introduced the ability to manage multiple activities. Threads then provided a mechanism history of computing moving from sequential processing toward concurrent and distributed systems.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"35\">Early computers generally processed instructions sequentially and had limited resources. The development of multitasking operating systems introduced the ability to manage multiple activities. Threads then provided a mechanism for multiple execution paths within a process.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"36\">The expansion of computer networks and the World Wide Web made concurrency particularly during these waiting periods. Queue-based architectures, worker pools, error handling, rate limiting, and thread-safe data structures subsequently valuable. Extraction programs increasingly needed to retrieve information from many remote sources, and much of their processing time was spent waiting for network responses.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"37\">Multi-threading allowed other tasks to proceed during these waiting periods. Queue-based architectures, worker pools, error handling, rate limiting, and thread-safe data structures subsequently made concurrent extraction more reliable.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"38\">The emergence of multi-core processors, asynchronous programming, and cloud computing expanded these capabilities further. Modern systems can divide large workloads across threads, processes, and even multiple machines.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"39\">The hypothetical case study demonstrates the practical effect. A sequential system processing 12,000 webpages could require approximately five hours under the stated assumptions. Introducing controlled concurrency reduced the processing time substantially, while excessive concurrency provided only marginal additional gains and increased failures.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"40\">This demonstrates a central principle of multi-threaded extraction: <strong class=\"x7amdea\">time savings come from efficiently using periods when individual tasks would otherwise be waiting<\/strong>.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"41\">However, speed should never be considered in isolation. A good extraction system must balance performance with accuracy, reliability, resource consumption, and responsible access. More workers do not necessarily produce better results, and faster extraction is of little value if it creates corrupted, duplicated, or unreliable data.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"42\">The history of the technology therefore shows a gradual movement from simple sequential scripts to sophisticated concurrent information-processing systems. Today&#8217;s tools can process large quantities of information in a fraction of the time that older approaches required, but the fundamental goal remains the same: organize work intelligently so that independent tasks can progress without unnecessary waiting.<\/p>\n<p class=\"x1yc453h xma8rkl xgoqxah xutxfr x1fie51u xgyxj25 x1xobyvs x1elgs31 x1fv8qjw xcy5tzr x1ht4adc xnvauns x1c2l018 x14l7nz5 xuw7688 x1pjt2rx x160d6zm xrxpjvj\" dir=\"ltr\" data-assistant-stream-block=\"\" data-assistant-stream-block-index=\"43\">In the future, multi-threading will increasingly operate alongside asynchronous programming, distributed computing, cloud infrastructure, and artificial intelligence. These technologies will make extraction systems faster and more adaptive while also increasing the importance of security, data quality, access governance, and responsible resource use.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>How Multi-Threaded Extraction Tools Save You Time: Methods, Benefits, and Case Study Introduction Modern businesses and research organizations often need to process large quantities of&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[270],"tags":[],"class_list":["post-24196","post","type-post","status-publish","format-standard","hentry","category-digital-marketing"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.9 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How Multi-Threaded Extraction Tools Save You Time - Lite14 Tools &amp; Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/lite14.net\/blog\/2026\/09\/22\/how-multi-threaded-extraction-tools-save-you-time\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How Multi-Threaded Extraction Tools Save You Time - Lite14 Tools &amp; 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