advancedCaching
What is a hot key problem in Redis? How do you solve it?
Tests whether you know why one extremely popular key can overload a single Redis shard even when the cluster overall has headroom.
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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