expertReal System Design Problems
Design Google's Web Indexing Pipeline — petabyte-scale crawl, parse, and index.
The petabyte-scale data-pipeline problem: how the web is crawled at scale, how HTML is parsed and content extracted, how an inverted index is built and continuously updated across hundreds of machines, and how index freshness is maintained. Expect to reason about a MapReduce-style (or equivalent) batch processing pipeline, not a single-machine design.
Ready to design this system end to end?
Generate a complete, structured system design answer — requirements, capacity estimation, API design, architecture, database choice, scaling, caching, fault tolerance, security, trade-offs, and more, walked through the way a strong senior engineer would in a real interview.
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