Posts taggedwebhooks
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Filed under webhooks
Webhook idempotency: handling duplicate deliveries safely
What webhook idempotency means in practice - why duplicates happen, how to use idempotency keys to keep consumer code safe, and patterns that hold up at scale.
ReadWhy webhook deliveries fail and how to replay them safely
The failure modes that take down webhook deliveries - timeouts, signature mismatches, downstream outages - and how to design a replay flow without double-fires.
ReadVerify HMAC webhook signatures in Node, PHP, and Python
Constant-time HMAC verification in three runtimes - with the bugs that get past code review.
ReadWebhook retry strategies: exponential backoff explained
How webhook senders should retry failed deliveries - exponential backoff math, jitter, idempotency keys, and the bugs that ruin good intentions.
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