Xianyu Technology

Oct 27, 2022 · Backend Development

Scalable Discount System Design with Crowd Synchronization

The article proposes a three‑step, crowd‑based discount system that decomposes discount elements, pre‑computes fan group membership in Redis, and combines offline batch with real‑time event synchronization, achieving tens of thousands QPS, millisecond latency, and both eventual and strong data consistency.