[Solved] Consider this method annotated with @CachePut: @CachePut(value = "orders", key = "#order.id") public Order updateOrder(Order order) { // missing return statement } What is the problem with this code? | Spring Boot

Spring Boot - Caching

Consider this method annotated with @CachePut:

@CachePut(value = "orders", key = "#order.id")
public Order updateOrder(Order order) {
    // missing return statement
}

What is the problem with this code?

AThe method should be annotated with @Cacheable instead

BThe key expression is invalid and causes a syntax error

CThe cache name 'orders' is not allowed in @CachePut

DThe method does not return a value, so cache cannot be updated

Step-by-Step Solution

Solution:

Step 1: Check method return requirement for @CachePut
@CachePut requires the method to return a value to update the cache with that value.
Step 2: Identify missing return statement issue
The method lacks a return statement, so no value is returned to update the cache, causing runtime issues.
Final Answer:
The method does not return a value, so cache cannot be updated -> Option D
Quick Check:
@CachePut needs method return to update cache [OK]

Quick Trick: Always return updated value when using @CachePut [OK]

Common Mistakes:

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