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web Advanced 21 lessons

WebSockets & Socket.io

Build real-time interactive apps. Master bidirectional communication using WebSockets and Socket.io to create chat rooms, live dashboards, and multiplayer experiences.

Move beyond the traditional HTTP request-response cycle. Learn to maintain persistent, stateful connections between client and server to push data instantly. You will handle custom events, broadcast messages to specific rooms, and manage connection state for scalable real-time applications. The course also covers the complexities of scaling these stateful connections across multiple server nodes using Redis adapters. You will understand how to engineer full-duplex communication channels that power modern features like live chats and notifications.

✅ 100% Free & Lifetime Access
⏱️ 5-Minute Lessons (Bite-sized learning)
🚀 21-Lesson Path (Independent modules)
📱 Mobile Friendly (Learn anywhere)
Realtime
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Secure Enrollment via SSL

Complete Course Syllabus

  • 1
    Protocol Basics
    Understand the difference between HTTP and WebSockets protocols clearly.
  • 2
    Socket.io Setup
    Implement the Server and Client handshake logic and events.
  • 3
    Broadcasting
    Send messages to Rooms and Namespaces efficiently and securely.
  • 4
    Chat Application
    Build a full MVP chat app with typing indicators.
  • 5
    Scaling
    Use Redis adapters to sync events across server processes.

Estimated completion time: 21 lessons • Self-paced learning • Lifetime access

Career Outlook

Estimated Salary
$110k - $150k

Career Paths

Real-time Systems Eng $120k-$160k
Backend Developer $110k-$150k
Full Stack Lead $115k-$155k

What You Will Learn

Establish persistent WebSocket connections between client and server endpoints
Broadcast events to all or specific clients instantly without polling
Manage user rooms and namespaced communications for private data channels
Handle connection errors and auto-reconnection logic for robust uptime
Scale applications across nodes with Redis adapters for high availability

Skills You Will Gain

WebSockets Socket.io Node.js Event-Driven Architecture Redis

Who Is This For

Full Stack Devs
Game Developers
App Architects

Prerequisites

Node.js/Express
JavaScript Events

WebSockets & Socket.io FAQs

Heavy server load?

Yes, requires careful connection management.

Difference from REST?

Keeps a persistent open connection for data.

Mobile support?

Yes, works well on mobile web and hybrid.

Hard to debug?

Tools exist, but asynchronous flows are tricky.

Need more info?
All Reork courses are 100% free, self-paced, and fully accessible on mobile devices. No prior experience is required. Read our full Platform FAQ.

Tech Stack & Tools

Socket.io Client
Node.js
Redis
Postman
Express.js

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