<ul data-eligibleForWebStory="false"><li>Idempotency and exactly-once execution in microservices pose challenges, with retries being dangerous in services handling critical data like finances or user states.</li><li>Detecting successful steps without side-channel state is problematic in microservices.</li><li>To address issues, all handlers in microservices must be made idempotent.</li><li>Microservices require business logic, idempotency, deduplication, and event rehydration, leading to complexity in development and tracing challenges.</li></ul>

The Myth of Idempotency: Why Microservices Still Struggle With Exactly-Once Execution

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