I Fired My Entire Node.js Stack — Rust Rebuilt It in 3 Weeks (The Ugly Truth)

Our API was drowning under 50ms P99 latencies. I rewrote everything in Rust expecting miracles. Got 8ms response times and three months of…

I Fired My Entire Node.js Stack — Rust Rebuilt It in 3 Weeks (The Ugly Truth)

Our API was drowning under 50ms P99 latencies. I rewrote everything in Rust expecting miracles. Got 8ms response times and three months of hell I didn’t budget for.

Rust promised performance and delivered — but the transition cost included rewriting every assumption about how backend systems should work, from memory management to error handling.

Our billing API hit 200k requests per minute during peak hours. Node.js was handling it fine — until it wasn’t.