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At-Least-Once Webhooks as a Take-Home: Rubric, Hidden Replays, and Failure Modes

This story is from 2026-09-22. It is preserved in the archive; the latest stories are on the live feed.

Webhook take-homes expose a reliability gap that ordinary green unit tests rarely catch in otherwise polished candidate submissions. At-least-once delivery is the default producer contract, yet many solutions acknowledge the HTTP request before durable idempotent storage finishes. The packet below…

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  1. 2026-09-22 15:30 · DEV Community — AI
    At-Least-Once Webhooks as a Take-Home: Rubric, Hidden Replays, and Failure Modes

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