https://skybreaker.pro/notes Short engineering notes from real work, some with a small live demo. en Mon, 12 Oct 2026 00:00:00 GMT https://skybreaker.pro/notes/webhooks-arrive-twice https://skybreaker.pro/notes/webhooks-arrive-twice Mon, 12 Oct 2026 00:00:00 GMT A sender that doesn't hear back sends the event again. How I make a handler safe to repeat, and when a queue is worth having. Webhooks Reliability