Environment Variables in Backend Apps: Validate Early, Fail Fast
Learn how backend apps should load environment variables once, validate them into a typed config object, and fail fast at startup with clear errors.
14 min read
Category
Backend Engineering
Runtimes, frameworks and API styles: Node.js, Bun, NestJS, Spring Boot, Python, REST, GraphQL and gRPC.
REST API Design: Resources, Status Codes and Consistency
Model resources as nouns, use HTTP methods and status codes per RFC 9110, and enforce conventions in CI so clients can predict every endpoint.
14 min read
Postgres SKIP LOCKED Queue: Build a Job Queue with Row-Level Locking
Build a Postgres job queue with FOR UPDATE SKIP LOCKED step by step: schema, dequeue query, worker models, retries, idempotency, vacuum and trade-offs.
14 min read