Node.js FAQ: Top Questions

The cluster module in Node.js allows a single Node.js process to fork multiple worker processes, utilizing multiple CPU cores to handle concurrent requests.

Key points:

• Primary/Workers: Primary process forks workers; each runs an instance of the app.
• Load Balancing: Built-in round-robin distribution of incoming connections.
• IPC: Workers communicate with the primary via inter-process communication.
• Use Case: Scaling CPU-bound or high-traffic applications.