If you’re building APIs with Node, you’ve probably hit the same wall many developers do: “Okay, it works locally. Now how do I actually ship this thing?” That’s where seeing real examples of deploying a Node.js API to Heroku: 3 examples and beyond, becomes incredibly helpful. Instead of vague theory, you want to see how people actually wire up `Procfile`s, environment variables, and CI so you can copy, adapt, and move on with your life. In this guide, we’ll walk through three of the best examples of deploying a Node.js API to Heroku, then expand with several more real examples and patterns you’ll run into in 2024–2025. We’ll cover a basic Express API, a JWT-secured API with a database, and a production-style setup with CI/CD and environment-specific configs. Along the way, we’ll talk about why Heroku is still relevant in the age of serverless, and how to avoid the common gotchas that slow teams down.
If you’re building APIs in Node, you can’t avoid middleware – and honestly, you shouldn’t want to. Middleware is where you plug in logging, auth, rate limiting, validation, and all the little guardrails that keep your API from spiraling into chaos. In this guide, we’ll walk through real, modern examples of adding middleware in a Node.js API – practical examples you can drop straight into your codebase. We’ll stay out of theory-land and focus on how teams actually wire this up in production: from basic logging to JWT auth, from security headers to request validation and error handling. Along the way, you’ll see multiple examples of adding middleware in a Node.js API – practical examples using Express-style syntax and patterns that work just as well with frameworks like Fastify or NestJS. If you’re tired of vague explanations and want concrete, 2025-ready patterns, this is the guide you bookmark and reuse.
If you’re trying to learn Node, staring at yet another dry code snippet can feel like watching paint dry. That’s why walking through real, working examples of 3 examples of setting up a Node.js server can make everything finally click. Instead of abstract theory, we’ll build small, practical servers you could actually use in side projects or at work. In this guide, we’ll start with a tiny “hello world” HTTP server, move into an Express-based JSON API, and finish with a slightly more realistic setup that reads data from a file and uses environment variables. Along the way, you’ll see multiple examples of how to structure routes, handle JSON, and organize your server so it doesn’t turn into a tangled mess once you add more features. Think of this as sitting next to a friendly coworker who’s walking you through the code line by line, not lecturing you from a podium. By the end, you’ll have several real examples you can copy, modify, and build on.
If you build APIs for the web, you’ve fought with CORS at some point. Instead of another dry theory piece, this guide walks through real-world examples of CORS in a Node.js API: 3 practical examples you can drop into your code today. We’ll look at the **simple open API**, the **locked-down production API**, and a **per-route CORS strategy** that fits modern microservice and SPA architectures. You’ll see how these examples of CORS behave with browsers, how preflight requests work, and how to avoid the classic “CORS error” that clogs up every front-end dev’s console. Along the way, we’ll add a few more scenarios—like handling cookies, API gateways, and local development setups—so you can adapt these patterns to your own stack. If you want CORS in your Node.js API to stop feeling like guesswork and start acting predictable, these practical examples will get you there.