Step-by-Step: Migrating from Node.js 21 to Bun 1.2 for Your Backend APIs Why Migrate to Bun 1.2? Bun 1.2 is a modern JavaScript runtime built for speed, offering native TypeScript support, a built-in bundler, test runner, and package manager. Compared to Node.js 21, Bun delivers up to 3x faster startup times, lower memory usage, and seamless compatibility with most Node.js APIs. For b
At 3:17 AM on a Tuesday in Q3 2024, our production Kotlin 2.0 microservice fleet hit a 92% memory utilization threshold across 140 nodes, traced to a silent coroutine leak in Ktor 2.2’s request pipeline that had been bleeding 12MB of heap per second for 72 hours. We lost $14k in SLO credits before we found the root cause. A Couple Million Lines of Haskell: Production Engineering at Mercury (78 p