Tips, Tricks, and Techniques for Node.js Development 5.3: Clustering

This video tutorial covers the use of the cluster module in Node.js, explaining how to scale applications using cluster.fork and manage worker processes. It discusses setting up the cluster module, handling worker processes, and utilizing CPU resources. The tutorial also explores various cluster events like online and exit, and demonstrates interprocess communication (IPC) for efficient process management. The video concludes with a preview of the next topic on Node process managers.

What is the primary purpose of using the cluster module in Node.js?

• To enhance the security of Node.js applications

• To create a single-threaded application

• To simplify database connections

• To scale applications by utilizing multiple CPU cores

In the context of Node.js clustering, what is the role of the master process?

• To serve static files

• To handle all incoming HTTP requests

• To execute database queries

• To manage worker processes and distribute tasks

Which event is triggered when a worker process goes online in a Node.js cluster?

• disconnect

• exit

• error

• online

What happens when a worker process exits in a Node.js cluster?

• All worker processes are terminated

• A new worker process is automatically spawned

• The master process crashes

• The server stops accepting requests

What is the purpose of the 'exit' event in a Node.js cluster?

• To handle errors in the master process

• To initiate a new worker process

• To log when a worker process starts

• To perform actions when a worker process stops

Which cluster event is associated with interprocess communication in Node.js?

• disconnect

• listening

• message

• error

How can messages be sent to all worker processes in a Node.js cluster?

• Using cluster.broadcast()

• Using process.send()

• Using process.emit()

• Using cluster.send()