Spring Boot - Caching
You want to configure a cache in Spring Boot that stores user data and expires entries after 10 minutes. Which approach correctly combines cache configuration and expiration?
You want to configure a cache in Spring Boot that stores user data and expires entries after 10 minutes. Which approach correctly combines cache configuration and expiration?
hard📝 Application Q15 of 15
Step-by-Step Solution
Solution:
Step 1: Understand cache expiration support
ConcurrentMapCacheManager does not support TTL (time to live) expiration by default.Step 2: Identify cache manager with TTL support
CaffeineCacheManager supports expiration policies like 10-minute TTL.Step 3: Evaluate options
@Cacheable does not accept expiration parameters; @CachePut updates cache but does not manage expiration automatically.Final Answer:
Use @EnableCaching and configure a CaffeineCacheManager with expiry policy of 10 minutes -> Option CQuick Check:
CaffeineCacheManager supports TTL expiration [OK]
Quick Trick: Use CaffeineCacheManager for TTL expiration [OK]
Common Mistakes:
- Assuming ConcurrentMapCacheManager supports TTL
- Trying to set expiration via @Cacheable annotation
- Using @CachePut to handle expiration manually
Master "Caching" in Spring Boot
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