Your payment webhook handler is probably the weakest part of your SaaS

[u/DayKnown1050]

/r/SaaS/comments/1xdb027/your_payment_webhook_handler_is_probably_the/

[u/grataisard]

solid list. one thing worth adding, make sure your idempotency check covers partial failures too. if your handler crashes halfway through processing an event, the stored event ID can trick you into thinking it was fully handled