How I Design REST APIs That Scale: Building Production-Ready Apps from Scratch Using Node.js
· 9 min read
Beginners ask, "What endpoint should I create?"
Production engineers ask, "What workflow am I protecting?"
That difference is everything. I've seen plenty of APIs start clean — a neat server.ts, a handful of routes, maybe some validation. Then features pile on. Users multiply. Errors get awkward. The database starts choking. Before long, that tidy API is a ball of mud held together by desperation and TODO comments.
This article is about building it right from the start. Not with over-engineering, but with deliberate structure. We'll build an Order Management API as we go — because every production engineer has dealt with orders, payments, and status transitions.
