3 lessons
Concurrency: Scraping Many Pages at Once
Why scraping pages one at a time is slow, and how async requests let you fetch hundreds of pages concurrently without hammering a single server.
The Scrapy Framework
When a scraper grows past a single script, Scrapy provides the structure — pipelines, middleware, built-in concurrency and retries — that hand-rolled code eventually reinvents anyway.
Storing Data and Keeping Scrapers Alive
What to do with extracted data beyond printing it to a console, and how to catch a production scraper silently breaking before it costs you a week of missing data.