samdeepthink
May 20, 2026 · Backend Development
Designing a Dedicated Takeaway Callback Service for Chain Store Order Integration
The article explains how to isolate external takeaway platform callbacks—Meituan, Douyin, JD Daojia—into a dedicated service, covering signature verification, idempotent processing with Redisson locks, and the end‑to‑end order handling flow that syncs with the core order domain.
DouyinJD DaojiaMeituan
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