Node.js FAQ: Top Questions

WebSockets in Node.js enable bidirectional, real-time communication between a client and server over a single, persistent connection, ideal for applications like chat or live updates.

Key points:

• Protocol: Upgrades HTTP to WebSocket (ws:// or wss://).
• Libraries: ws (popular), Socket.IO (higher-level).
• Features: Low latency, event-driven messaging.
• Use Case: Real-time apps (e.g., notifications, gaming).