Graceful Shutdown for Node.js Services
Learn how to drain HTTP requests, stop background work, close dependencies, and make Node.js deployments terminate safely.
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Optimistic Concurrency Control for APIs and Databases
Learn how to prevent lost updates with version columns, ETags, compare-and-swap writes, and useful conflict responses.
Practical API Rate Limiting with Token Buckets
Learn how to design token-bucket API rate limits that protect services without punishing normal users.
Zero-Downtime Database Migrations with Expand and Contract
Learn how to ship database schema changes safely with expand-contract migrations, batched backfills, compatible application deploys, and clear rollback points.
Implementing the Transactional Outbox Pattern for Reliable Events
Learn how the transactional outbox pattern keeps database writes and event publication consistent without distributed transactions.
Designing Dead-Letter Queues That Help You Recover Events
Learn how to design dead-letter queues with useful metadata, triage workflows, safe replay tools, and clear ownership so failed events can be recovered instead of ignored.
Designing Cursor Pagination APIs That Stay Correct Under Load
Learn how to design cursor pagination APIs that remain stable when records are inserted, deleted, or queried at scale.
Implementing Idempotency Keys in APIs to Prevent Duplicate Actions
Learn how idempotency keys prevent duplicate side effects in retry-heavy clients by combining request fingerprinting, state tracking, and careful concurrency handling.
Contract Testing for Event-Driven Systems: Catching Breaking Changes Before Production
Learn how to test event contracts between producers and consumers so schema drift, semantic changes, and versioning mistakes are caught before deployment.