intermediateDatabases & Storage

What is the CAP theorem? Give real database examples for CP and AP systems.

Tests whether you can name real databases (like DynamoDB or Cassandra vs. traditional RDBMS) and place them correctly on CAP.

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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