websocket-implementation

WebSocket Implementation

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Build scalable WebSocket systems for real-time communication with proper connection management, message routing, error handling, and horizontal scaling support.

When to Use

• Building real-time chat and messaging
• Implementing live notifications
• Creating collaborative editing tools
• Broadcasting live data updates
• Building real-time dashboards
• Streaming events to clients
• Live multiplayer games

Quick Start

Minimal working example:

const express = require("express");
const http =

Reference Guides

Detailed implementations in the references/ directory:

Best Practices

✅ DO

• Implement proper authentication
• Handle reconnection gracefully
• Manage rooms/channels effectively
• Persist messages appropriately
• Monitor active connections
• Implement presence features
• Use Redis for scaling
• Add message acknowledgment
• Implement rate limiting
• Handle errors properly

❌ DON'T

• Send unencrypted sensitive data
• Keep unlimited message history in memory
• Allow arbitrary room/channel creation
• Forget to clean up disconnected connections
• Send large messages frequently
• Ignore network failures
• Store passwords in messages
• Skip authentication/authorization
• Create unbounded growth of connections
• Ignore scalability from day one