@Service
public class OrderService {
    @Transactional
    public void processOrder(Order order) {
        orderRepository.save(order);
        TransactionSynchronizationManager.registerSynchronization(new TransactionSynchronization() {
            @Override
            public void afterCommit() {
                emailService.sendConfirmation(order);
            }
            @Override
            public void afterCompletion(int status) {
                if (status == STATUS_ROLLED_BACK) {
                    logger.error("Transaction failed for order: {}", order.getId());
                }
            }
        });
    }
}