What Is a REST API?

A REST API allows different applications and services to communicate with each other over HTTP.

REST APIs commonly use methods such as GET, POST, PUT, PATCH, and DELETE.

Creating an Express Server

Express is a lightweight and flexible framework for building Node.js backend applications.

import express from "express";

const app = express();

app.use(express.json());

app.get("/api/users", (req, res) => {
  res.json([]);
});

app.listen(5000);

API Structure

For larger applications, separating routes, controllers, services, and database logic can make the backend easier to maintain.