Idempotency keys for payment APIs in ASP.NET Core
An idempotency key turns "the client retried" from a duplicate payment into a harmless replay. Here is a small, runnable ASP.NET Core implementation and the trade-offs behind it.
An idempotency key turns "the client retried" from a duplicate payment into a harmless replay. Here is a small, runnable ASP.NET Core implementation and the trade-offs behind it.