advancedReal System Design Problems

Design a search system for knowledge base articles used by millions of users.

Tests whether you know when to move beyond database LIKE queries to a dedicated search engine like Elasticsearch.

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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Continue to Design Slack/Teams — channels, threads, and search at scale.← Back to all System Design (HLD) questions