I added a reward feature that pays out through Stripe's customer balance, and I did what every payments guide tells you to do: I passed an idempotency key on the write that moves money. A security review pass then found a double-payment path anyway, and the key was not wrong. The key was correct…
The core idea behind Featherboard is to keep the core functionality accessible without a paid plan. You can run the app on your own hardware for free, while the hosted version offers the convenience of having it managed for you for a small fee. So I've started implementing billing with Stripe. It's…
Payment providers deliver webhooks at least once . That is not a bug in their systems, it is the only guarantee a network can offer: if your endpoint is slow, times out, or answers 500 after committing, the event comes back. Twice. Sometimes days later. Everything that follows exists to make the…
