In what cases and how is it recommended to use the @Transactional annotation in Spring for transaction management?

The @Transactional annotation in Spring is used for managing transactions at the method or class level. It ensures that database operations within a method are executed within a single transaction.

It is recommended to apply @Transactional in cases where a method performs multiple related database operations that should be atomic — either all succeed or all are rolled back in case of an error.

Example of usage:

@Service
public class UserService {

    @Transactional
    public void createUserAndProfile(User user, Profile profile) {
        userRepository.save(user);
        profileRepository.save(profile);
        // If an exception occurs here, both operations will be rolled back
    }
}

Important:

• The annotation should be applied to public methods.
• Transactions work correctly when methods are called through Spring proxies.
• You can configure parameters, such as isolation level, behavior on exceptions.