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  • Idempotency Keys and the Exactly-Once Myth in Distributed Systems

    Idempotency Keys and the Exactly-Once Myth in Distributed Systems

    How to design idempotent write APIs, prevent duplicate side effects, and avoid exactly-once assumptions in real production traffic.

    April 12, 2026Distributed Systems#idempotency#distributed-systems#api-design#reliability#payments

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