Tencent Cloud Developer
Jan 10, 2023 · Backend Development
Overload Protection Strategies in WeChat's Large‑Scale Microservices
WeChat safeguards its billion‑user microservice platform by detecting overload when average queue wait exceeds 20 ms and applying a two‑dimensional priority system—business and hourly‑hashed user priorities—adjusted via histogram‑based admission controls and upstream back‑pressure, ensuring stable service during massive traffic spikes.
WeChatbackend engineeringmicroservices
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