Why I Chose Go Over Node.js for Our Core Services
A personal take on the trade-offs that led us to rewrite in Go — and what we gained.
When we started Go Gamer, our backend was a patchwork of Express.js services. They worked — until they didn't. At around 2,000 concurrent users, garbage collection pauses and callback-heavy code started to bite. I remember one Friday night where a single memory leak in a cart service took down checkout for 40 minutes.
That was the moment I started exploring Go seriously. The language felt opinionated in the right ways: explicit error handling, goroutines for concurrency, and a single binary deployment. No node_modules folder the size of a small galaxy.
The rewrite wasn't painless. We lost the massive npm ecosystem and the rapid prototyping speed of JavaScript. But what we gained was predictable performance. Our p99 latency dropped from 320ms to 18ms. Memory usage fell by 70%. And the deployment story — a single static binary in a scratch Docker container — simplified our CI/CD pipeline dramatically.
Go's type system isn't as expressive as TypeScript's, and generics (now available since Go 1.18) are still maturing. But for request-heavy backend services that need to be fast and reliable, Go has been the right choice for us. If your bottleneck is developer velocity on UI-heavy features, Node.js is still great. But if you're building infrastructure, APIs, or anything that needs to handle serious throughput, give Go an honest look.
The key lesson: choose the language that matches your constraints, not the one that matches the hype cycle.