System Design · OpenAI · Medium
Distributed Web Crawler Design A web crawler (commonly called a spider) systematically explores the web by fetching pages and then following hyperlinks found within them. It drives search engines, builds datasets for training large language models, monitors website changes, and aids in archiving the internet. The core difficulty is achieving this at a massive scale—billions of pages—while being courteous to website operators and robust against the frequent failures and…
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