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Payment Platforms

Payment Order Number Design and Idempotency Tables: Generation Rules and Unique Index Backstop

2026-11-09 16IDC

The order number looks like the simplest field in a payment system and is actually its foundation. Choose the generation strategy badly and the failures surface six months later: colliding numbers, values rejected as too long after switching channels, auto-increment IDs leaking real volume, and the same payment processed twice under concurrency. This article gives implementable designs.

Payment Platforms

Build or Buy for Each Payment Layer: The Test Is Who Carries It When Things Break

2026-11-10 16IDC

Every layer of a payment stack has to answer build or buy. Most teams weigh engineering months against subscription fees and only discover during an incident that responsibility was never clearly assigned. This article gives three decision questions, a layer-by-layer verdict, three common mistakes in building, and the four things you must keep in-house no matter how much you outsource.

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