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How to design API idempotency keys for retries, duplicate POST requests, payload mismatch, TTL, in-progress requests, and safe response replay.
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How to version APIs without breaking existing clients: compatibility policy, staged v1 to v2 rollout, deprecation headers, telemetry, and release gates.- Published on
How to detect and fix the N+1 query problem in ORMs with query counts, SQL traces, eager loading, batched IN queries, and request-scoped loaders.- Published on
Why retry logic can amplify degraded systems, how retry budgets and jitter reduce retry storms, and what to check before retrying production requests.