SpringBoot + WeChat Pay V3: Architecture for Million-Concurrent Payments
The article explains how to build a production‑grade, million‑concurrent payment pipeline with SpringBoot and WeChat Pay V3, covering the new security model, state‑machine design, idempotent handling, decoupled architecture, compensation mechanisms, and operational best practices such as connection‑pool tuning, observability, and fault‑tolerant deployment.
