[Solved] Why does this caching setup fail? @EnableCaching @Configuration public class CacheConfig { @Cacheable("items") public List getItems() { return List.of("a", "b"); } } | Spring Boot

Spring Boot - Caching

Why does this caching setup fail?

@EnableCaching
@Configuration
public class CacheConfig {
  @Cacheable("items")
  public List getItems() { return List.of("a", "b"); }
}

AMethod getItems is not public

BCaching annotations must be on Spring-managed beans

CCache name "items" is invalid

D@EnableCaching must be on the main application class

Step-by-Step Solution

Solution:

Step 1: Understand Spring bean management
For caching to work, methods must be in Spring-managed beans (e.g., @Service, @Component).
Step 2: Analyze given code
CacheConfig is a configuration class, but getItems() is not exposed as a bean method or in a bean class.
Final Answer:
Caching annotations must be on Spring-managed beans -> Option B
Quick Check:
Caching needs Spring beans [OK]

Quick Trick: Put @Cacheable on Spring beans like @Service [OK]

Common Mistakes:

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Why does this caching setup fail?