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How to run background jobs safely in production with replay-safe handlers, bounded retries, dead-letter triage, visibility timeouts, queue dashboards, and business-level correctness checks.
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A practical rollout plan for safe database migrations using expand-and-contract, phased constraints, resumable backfills, rollback planning, and production monitoring.- Published on
A practical guide to API integration testing with real request boundaries, auth, persistence checks, failure cases, idempotency, concurrency, and response contracts.- Published on
A production workflow for finding slow SQL queries, reading EXPLAIN plans, choosing fixes, and proving the endpoint improved.- Published on
How to design API idempotency keys for retries, duplicate POST requests, payload mismatch, TTL, in-progress requests, and safe response replay.