Building Real-Time Apps with WebSockets

Real-time features are essential for modern applications.

What are WebSockets?

WebSockets provide full-duplex communication channels over a single TCP connection.

Server Setup with Socket.io

``javascript
const io = require('socket.io')(server)

io.on('connection', (socket) => {
console.log('User connected')

socket.on('message', (data) => {
io.emit('message', data)
})
})
`

Client Setup

`javascript
import { io } from 'socket.io-client'

const socket = io('http://localhost:3000')

socket.on('message', (data) => {
console.log('Received:', data)
})

socket.emit('message', 'Hello!')
``

Use Cases

Chat applications

Live notifications

Collaborative editing

Real-time dashboards

Gaming

Conclusion

WebSockets enable powerful real-time experiences!