Building Scalable Node.js APIs: Lessons from Production

Building APIs that can handle millions of requests while remaining maintainable is one of the most rewarding challenges in backend development. Over the past few years, I’ve had the opportunity to architect and scale Node.js APIs from handling hundreds of requests per day to millions per hour. In this post, I’ll share the key principles, patterns, and practical techniques that have proven most valuable in production environments. The Foundation: Core Principles 1. Design for Failure Every external dependency will fail at some point. Your API should gracefully handle: ...

August 26, 2025 · 7 min · 1408 words · Simon Huggins