20 questions for “Expiration & Eviction”

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Redis Expiration & Eviction 7

Information Technology

20 questions in 1 technology

#	Question	Technology	Topic	Level
1	How do you set an expiration time on a Redis key so it automatically gets deleted after a certain period? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Beginner
2	What eviction policies are available in Redis for handling the situation when memory usage reaches its configured maximum limit? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Intermediate
3	What is the difference between the LRU and LFU eviction algorithms, and when would you choose one over the other? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Intermediate
4	How does Redis actually implement key expiration internally, using both a passive and an active approach? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Advanced
5	What is the difference between the EXPIRE, TTL, and PERSIST commands in Redis? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Beginner
6	How do you monitor how many keys are currently being evicted from Redis due to memory pressure, and why is this an important metric to track? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Intermediate
7	How would you diagnose and resolve a situation where important data is being unexpectedly evicted from Redis due to memory pressure? Redis › Expiration & Eviction	Redis	Expiration & Eviction	Advanced
8	How do you extend a user's session expiration time each time they make a new request, keeping active users logged in? Redis › Session Management with Redis	Redis	Session Management with Redis	Beginner
9	How would you design a session management system that supports both a sliding expiration for active users and an absolute maximum session lifetime regardless of activity? Redis › Session Management with Redis	Redis	Session Management with Redis	Advanced
10	What is the cache aside pattern, and how does it work with Redis? Redis › Caching Patterns	Redis	Caching Patterns	Beginner

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