Microservices With Node Js And React Download Apr 2026

npm install express http-proxy-middleware

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

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.

FROM node:18-alpine WORKDIR /app COPY package*.json ./ RUN npm install COPY . . EXPOSE 4001 CMD ["node", "server.js"] microservices with node js and react download

const subscriber = redis.createClient(); subscriber.subscribe('user-created', (message) => { const user = JSON.parse(message); console.log(`Send welcome email to ${user.email}`); // Integrate with email provider here }); 5.1 Create React App cd frontend npx create-react-app react-app cd react-app npm install axios 5.2 Fetch Data from the API Gateway src/App.js

useEffect(() => { fetchUsers(); }, []);

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): npm install express http-proxy-middleware app

react-frontend: build: ./frontend/react-app ports: - "3000:3000" environment: - REACT_APP_API_URL=http://api-gateway:5000

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> ); }

const express = require('express'); const mongoose = require('mongoose'); const cors = require('cors'); require('dotenv').config(); const app = express(); app.use(cors()); app.use(express.json()); EXPOSE 4001 CMD ["node", "server

const User = mongoose.model('User', userSchema);

const express = require('express'); const { createProxyMiddleware } = require('http-proxy-middleware'); const app = express();

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

// Proxy requests to services app.use('/users', createProxyMiddleware({ target: 'http://localhost:4001', changeOrigin: true, }));