MethodMethod11 min read

Webhooks, in general

The pattern behind every vendor's version: what a webhook is, how signatures work, why you must be idempotent, retries and backoff, dead letters, and how to develop against one locally.

What this one covers

·An API call in the other direction
·Verify the signature, before anything else
·Assume every event arrives more than once
·Answer fast, work later
·Retries, backoff and dead letters
·Sending them, briefly
·Developing against one locally

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