Make your write endpoints safely retryable with idempotency keys, deduplication, and consistent responses for repeated requests.
## CONTEXT Networks fail mid-request, so any client that retries a write can accidentally create duplicate charges, orders, or records unless the endpoint is idempotent. In 2026, the standard pattern is an idempotency key supplied by the client, stored server-side with the original response, so a retried request…
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