fake frontendThe notebook of a backend engineer — slow, careful guides on TypeScript, Docker and Node.js, where every example runs in a sandbox right on the page.https://omribarzik.com/Multi-stage Docker builds that actually cachehttps://omribarzik.com/blog/multi-stage-docker/https://omribarzik.com/blog/multi-stage-docker/Most Node Dockerfiles reinstall the world on every code change. A two-line reorder fixes it.Thu, 14 May 2026 00:00:00 GMTStreams in Node: backpressure, finally explainedhttps://omribarzik.com/blog/node-streams-backpressure/https://omribarzik.com/blog/node-streams-backpressure/Backpressure isn't an advanced topic — it's the one thing streams exist to give you. Here's the whole idea.Thu, 30 Apr 2026 00:00:00 GMTParsing, not casting: trusting data at the boundaryhttps://omribarzik.com/blog/parsing-not-casting/https://omribarzik.com/blog/parsing-not-casting/A type assertion is a promise you make to the compiler and break at runtime. Parsing is how you keep it.Thu, 16 Apr 2026 00:00:00 GMTA tiny job queue in 60 lines of Nodehttps://omribarzik.com/blog/tiny-job-queue/https://omribarzik.com/blog/tiny-job-queue/Before you reach for Redis and BullMQ, understand the thing they're built on — a queue is a list, a worker, and a concurrency limit.Thu, 02 Apr 2026 00:00:00 GMTType-safe environment variables without the boilerplatehttps://omribarzik.com/blog/type-safe-env/https://omribarzik.com/blog/type-safe-env/Stop sprinkling `process.env.FOO!` across your codebase. Validate once, at boot, and hand the rest of your app a fully-typed config.Thu, 28 May 2026 00:00:00 GMT