Youzan Coder
Sep 6, 2019 · Backend Development
Design and Implementation of a Stable Withdrawal (Outflow) System
The article describes a stable withdrawal system that integrates UnionPay and WangLian, emphasizing immutable serial numbers, strict exception handling, real‑time monitoring, multi‑stage compensation, a database‑driven routing engine handling up to 500 k transactions per hour, and an operations console for manual recovery, while outlining future optimizations.
backend architecturecompensation logicdatabase design
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