In 2025, running a production Node.js application over plain HTTP is professional negligence. Modern browsers mark HTTP sites as “Not Secure”, CDNs refuse to cache them, and attackers can eavesdrop or tamper with traffic in seconds.
Input validation isn’t just checking types; it’s your first line of defense against injection attacks, data corruption, and logic flaws. Here’s how to implement it properly.
Why Validation Matters in Production
In production systems, invalid input causes more than just 400 errors. It leads to:
If you’ve ever chased a vague “Something went wrong” in production at 2 a.m., you know why error handling matters. The goal isn’t to stop every failure (you can’t) but to make failures boring: predictable, contained, and recoverable. With Node.js 24.x improving async context performance and stability, now’s a great time to tighten your approach. This guide is a practical playbook; less theory, more patterns you can ship.
The landscape of web automation has been revolutionized by Puppeteer, a powerful Node.js library that provides a high-level API to control Chrome or Chromium browsers programmatically. Whether you’re building automated testing frameworks, scraping dynamic content, or generating PDF reports, Puppeteer offers unparalleled capabilities for headless browser automation.
Performance optimization is often seen as a complex, advanced topic reserved for the final stages of development. However, understanding how JavaScript engines work can help you write faster code from the start. In this article, we’ll explore how the V8 JavaScript engine’s Just-In-Time (JIT) compiler works and how subtle code changes can yield dramatic performance improvements.