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Writing Idempotent Webhooks: Patterns That Survive Retries

This story is from 2026-10-12. It is preserved in the archive; the latest stories are on the live feed.

Every webhook arrives twice eventually, so design for it from day one A unique dedupe key plus a processed-events table kills double-acts Read current state before acting so a retry is a no-op Return 2xx fast, do the slow work after you confirm it hasn't run Every payment provider I've wired up del…

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  1. 2026-10-12 07:37 · DEV Community — AI
    Writing Idempotent Webhooks: Patterns That Survive Retries

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