May 2017
Beginner to intermediate
220 pages
5h 2m
English
Content preview from Python Web Scraping - Second Edition
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Summary
This chapter covered why sequential downloading creates performance bottlenecks. We looked at how to download large numbers of web pages efficiently across multiple threads and processes and compared when optimizations or increasing threads and processes might be useful and when they could be harmful. We also implemented a new Redis queue which we can use across several machines or processes.
In the next chapter, we will cover how to scrape content from web pages which load their content dynamically using JavaScript.
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