Microservices With Node Js And React Download Apr 2026

function App() { const [users, setUsers] = useState([]); const [name, setName] = useState(''); const [email, setEmail] = useState('');

Run everything with:

npm install express http-proxy-middleware

version: '3.8' services: user-service: build: ./services/user-service ports: - "4001:4001" environment: - MONGO_URI=mongodb://mongo-users:27017/usersdb depends_on: - mongo-users mongo-users: image: mongo ports: - "27017:27017" microservices with node js and react download

const fetchUsers = async () => { const response = await axios.get( ${API_GATEWAY}/users ); setUsers(response.data); };

app.listen(5000, () => { console.log('API Gateway running on port 5000'); });

const express = require('express'); const { createProxyMiddleware } = require('http-proxy-middleware'); const app = express(); function App() { const [users, setUsers] = useState([]);

// MongoDB connection mongoose.connect(process.env.MONGO_URI, { useNewUrlParser: true, useUnifiedTopology: true, });

import React, { useState, useEffect } from 'react'; import axios from 'axios'; const API_GATEWAY = 'http://localhost:5000';

Introduction In modern web development, the microservices architecture has become a go-to approach for building scalable, maintainable, and resilient applications. When combined with Node.js for the backend and React for the frontend, you get a powerful, full-stack JavaScript solution. Example: When a user is created, notify the email service

MONGO_URI=mongodb://localhost:27017/usersdb PORT=4001 Run the service: node server.js The API Gateway routes incoming requests from the React frontend to the appropriate microservice.

return ( <div> <h1>Microservices User Management</h1> <form onSubmit={createUser}> <input placeholder="Name" value={name} onChange={(e) => setName(e.target.value)} /> <input placeholder="Email" value={email} onChange={(e) => setEmail(e.target.value)} /> <button type="submit">Add User</button> </form> <ul> {users.map(user => ( <li key={user._id}>{user.name} - {user.email}</li> ))} </ul> </div> ); }

Now the React app can make requests to http://localhost:5000/users instead of directly to each service. Sometimes services need to communicate without blocking the request-response cycle. Redis Pub/Sub is a lightweight solution. Example: When a user is created, notify the email service. In user-service (publisher):

// Routes app.get('/users', async (req, res) => { const users = await User.find(); res.json(users); });