[Solved] Consider this Spring Boot Redis cache configuration snippet: @Bean public RedisCacheManager... } If the Redis server is down, what will happen when the application tries to cache data? | Spring Boot

Spring Boot - Caching

Consider this Spring Boot Redis cache configuration snippet:

@Bean
public RedisCacheManager cacheManager(RedisConnectionFactory factory) {
    return RedisCacheManager.builder(factory).build();
}

If the Redis server is down, what will happen when the application tries to cache data?

AApplication falls back to file-based cache

BApplication throws a runtime exception and crashes

CData is cached in memory without Redis

DCaching silently fails but application continues

Step-by-Step Solution

Solution:

Step 1: Understand RedisCacheManager dependency
RedisCacheManager requires a running Redis server to store cache data.
Step 2: Analyze behavior if Redis is down
Without Redis, cache operations typically fail silently and the application continues unless explicitly configured to fail.
Final Answer:
Caching silently fails but application continues -> Option D
Quick Check:
Redis down usually does not crash app by default [OK]

Quick Trick: Redis down causes silent cache failure unless handled [OK]

Common Mistakes:

Master "Caching" in Spring Boot

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