idempotency
3 posts — newest first.
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I Killed an Agent 120 Times to See What Durable Execution Actually Buys You
SIGKILL at every step boundary under four persistence policies. Only one had zero duplicate side effects, and the fix wasn't on the agent's side.
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Webhooks: Verify, Store, Say 200, Then Think
A webhook is a message queue whose producer belongs to someone else. The receiver pattern that survives retries, duplicates, replays and out-of-order events.
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Idempotency Keys: The Thing That Makes a Retry Safe
A timeout never tells you whether the work happened. Idempotency keys resolve that — if you get the concurrency and scope right.