Architecture Digest

May 15, 2019 · Backend Development

WeChat Backend Architecture: High Availability, Strong Consistency, and Scalable Microservices

This article summarizes the design of WeChat's massive‑scale backend, covering its evolution from early storage systems to a multi‑master PaxosStore architecture that delivers six‑nine availability, strong data consistency, rapid iteration, and a unified microservice framework for billions of daily operations.