Idempotency Keys Explained Simply
Every payments engineer eventually meets the same ghost. A customer taps "Pay" once, the network hiccups, the mobile app retries on their behalf, and suddenly...
11 min1017Read →
Tagged #architecture — Page 4
Rate Limiting Strategies for Payment APIs
Every payment platform I have helped build eventually runs into the same uncomfortable truth: the request you cannot afford to drop and the request you must...
11 min873Read →
Designing Webhooks That Survive Failure
Webhooks are the part of a payments platform that everyone treats as an afterthought until the night they take down a customer's order pipeline. They look...
11 min866Read →
Designing a Compliance-First Data Model for African Fintech
In most software, the data model exists to serve the features. In regulated fintech, the data model also has to serve the auditor, the regulator, and a future...
4 min455Read →
Event-Driven Architecture for Cross-Border Payments: A Practical Primer
Cross-border payments are a sequence of steps that happen at different speeds, controlled by different parties, any of which can fail independently and at the...
5 min936Read →
Building Idempotent Payment APIs in C# and .NET
If you build payment systems long enough, you eventually learn the same lesson the hard way: the network will retry your request, and your API had better be...
6 min464Read →