Have you used caching mechanisms in your recent projects?

Yes, in my recent projects I have used caching mechanisms to improve performance and reduce the load on databases or external services.

Most commonly, I used:

• Spring Cache with the @Cacheable annotation for automatic caching of method results.
• External caches, such as Redis, for distributed caching.

Example of using Spring Cache:

@Service
public class UserService {

    @Cacheable("users")
    public User getUserById(Long id) {
        // Long operation, e.g., database query
        return userRepository.findById(id).orElse(null);
    }
}

This approach allows reusing previously obtained data without repeated computational or query costs.