Tag: bun

14 Test Files, Zero Flaky Tests: How I Test Every API Domain in Elysia.js Without Jest or Vitest

Why Bun's native test runner replaced my entire testing stack — and how 14 integration test files with real databases, mock modules, and Faker-powered factories give me the confidence to deploy solo.

From 1.2GB to 89MB: The Docker Multi-Stage Build That Changed How I Ship Bun Applications

How I reduced production Docker images by 93% using multi-stage builds, Alpine base images, non-root users, entrypoint migrations, and every optimization pattern I've developed running six services on one VPS.

We Run Cron Jobs Inside the Bun Server Process (And You Should Too)

How we replaced system cron and external job runners with an in-process scheduler in Bun — featuring drift correction, job deduplication, error isolation, and why fewer moving parts means fewer 3 AM pages.

We Built Our Own Hot Reload Because Bun Doesn't Have One (And It's Better)

How we built a custom file watcher for development hot-rebuild in Bun — with debouncing, selective bundle rebuilds, cache invalidation, and why rolling your own DX tooling is sometimes the right call.

I Processed 1.2 Billion Map Records on a $7/Month Server. The Lead Database Industry Doesn't Want You to Know This.

How I built a Bun-powered pipeline that downloads 13GB of OpenStreetMap data, extracts 7.4 million businesses, crawls their websites, and produces over one million qualified leads — all on a single Hetzner VPS.

I Deleted a 200MB Rust Binary From My Docker Image. My Deploys Have Never Been the Same.

How migrating from Prisma 5's Rust query engine to Prisma 7's pure-JavaScript driver adapter cut our Docker image by 42%, slashed cold starts by 68%, and gave us back control of our connection pool.

Your Users Download 1.5MB of JavaScript to See a Landing Page. We Fixed It With an If Statement.

How we split a React SPA into public (400KB), auth (150KB), and private (1.5MB) bundles — selected server-side by URL path, built with Bun, zero framework required.

We Built a 340-Line Static Site Generator That Made Next.js Irrelevant. It Renders 480 Pages in 650ms.

How mentoring.oakoliver.com generates 40 locales × 12 routes at server startup using React 19, hydrates with React Query, and why we'll never go back to a framework for this.

We Replaced Node.js With Bun Across Every Production Service. Here's What Nobody Tells You.

The real story of migrating three production services from Node.js to Bun on a single VPS — cold starts, memory savings, deleted dependencies, and every gotcha that bit us.