Technical Question Bank · Peer-Reviewed

Job Interview Questions and Answers Directory

Search and filter frequently asked interview questions across technical, programming, and behavioral domains. Tailor your interview preparation by difficulty for freshers or experienced developers (13 available).

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Redis Medium technical

Q11. How do you prevent a cache stampede or thundering herd?

A stampede happens when a popular key expires and many clients simultaneously hit the database to rebuild it. Several mitigations exist. - Locking or mutex: only the firs...

2 Answer

Redis Medium technical

Q12. What are pipelining and transactions in Redis?

Pipelining sends many commands in one network round trip without waiting for each reply, dramatically improving throughput for batch workloads since cost is dominated by ...

1 Answer

Caching Strategies Hard system-design

Q13. How do you handle hot keys in a distributed cache?

A hot key is accessed so frequently that a single cache node or partition becomes a bottleneck. Keys are distributed by consistent hashing, but one key always maps to one...

2 Answer