Snippet

Performance Optimization with @Cacheable

Spring Cache abstraction allows you to transparently cache expensive operations. Subsequent calls with the same ID will return the cached value instead of executing the method body.

snippet.java

java

@Service
public class ProductService {
    @Cacheable(value = "products", key = "#id")
    public Product getProductById(Long id) {
        // Simulated slow database call
        return repository.findById(id).orElseThrow();
    }
}

spring

Breakdown

@Cacheable(value = "products", key = "#id")

Specifies the cache name and the dynamic key used for lookup.

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Performance Optimization with @Cacheable

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