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Payment Platforms

Implementing a Multi-Channel Payment Callback Framework: Unified Entry, Verify Adapters, and Compensation

16IDC

Write one callback endpoint for the first channel and it is thirty lines. Copy it for the second. By the third the code has spiraled: verification logic scattered, response formats diverging, idempotency reimplemented three ways, and lost notifications untraceable. This article lays out a reusable framework with a unified entry point, verify adapters, an idempotency middle layer, and scheduled query compensation.

unified callbackpayment callbackstrategy patterncallback retryscheduled query
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Payment Platforms

Aggregate Payment and the Service Provider Model: Unified Channels, Sub-Merchants, and Split Settlement

16IDC

For platform businesses collecting through Alipay, WeChat Pay and UnionPay at once, the hard part is not any single integration but three sets of callbacks, three sets of reconciliation and three sets of refund rules. Aggregate payment and the service provider model address exactly that, but the compliance line around second clearing must be drawn first.

split settlementsecond clearingunified callbackpayment routingplatform business
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