About This Architecture

E-commerce order and payment sequence diagram orchestrating four phases: order placement, payment initiation, VNPAY gateway processing, and asynchronous callback handling. User submits order through React frontend, triggering Node.js backend validation, MySQL persistence, and VNPAY payment request with dual callback mechanisms (IPN and browser redirect). The architecture demonstrates secure payment flow with explicit error handling—failed transactions (responseCode != 00) update order status and notify users immediately. Fork this diagram to customize payment gateway integration, add retry logic, or adapt for alternative processors like Stripe or PayPal.

People also ask

How do I implement a complete order and payment flow with VNPAY callbacks in a Node.js and React e-commerce application?

This sequence diagram shows the four-phase flow: user places order via React frontend, Node.js backend validates and stores in MySQL, VNPAY processes payment with both IPN (server) and redirect (browser) callbacks, and backend updates order status based on responseCode. Failed transactions trigger immediate user notification.