Microservices with Node.js — Complete Guide

services/
  users/
    src/
      index.ts
      routes.ts
    package.json
  posts/
    src/
      index.ts
      routes.ts
    package.json
  api-gateway/
    src/
      index.ts

import express from "express";
import httpProxy from "express-http-proxy";

const app = express();

app.use("/users", httpProxy("http://localhost:3001"));
app.use("/posts", httpProxy("http://localhost:3002"));
app.use("/comments", httpProxy("http://localhost:3003"));

app.listen(8000);