Kas saaksite rääkida oma viimases projektis ellu viidud kõige olulisematest ülesannetest ja lahendustest?

In the last project, I worked on developing an order management system in Java. One of the key tasks was to ensure reliable transaction processing and integration with external payment services.

To solve this task, I used Spring Framework with transaction support via @Transactional, which allowed guaranteeing data integrity in case of failures. I also implemented a REST API for interaction with the frontend and external services.

Example code using the @Transactional annotation:

@Service
public class OrderService {

    @Transactional
    public void processOrder(Order order) {
        // order saving logic
        orderRepository.save(order);
        // calling external payment service
        paymentService.charge(order);
    }
}

This improved the reliability and scalability of the application.