service upgrade

Xianyu Technology

Sep 24, 2020 · Cloud Native

Zero‑Downtime Upgrade Strategies for Xianyu Search Service

Xianyu’s zero‑downtime upgrade strategy for its multi‑microservice search stack combines rigorous forward/backward compatibility checks, batch‑wise stateless updates, careful stateful migrations via hot‑updates or dual‑write sync, robust service‑discovery traffic control, and Alibaba‑style monitoring, gray‑release testing, and rapid rollback to ensure uninterrupted service.