About

Node.js is an open source server framework.

Here is how PHP or ASP handles a file request:

• Sends the task to the computer's file system.
• Waits while the file system opens and reads the file.
• Returns the content to the client.
• Ready to handle the next request.

Here is how Node.js handles a file request:

• Sends the task to the computer's file system.
• Ready to handle the next request.
• When the file system has opened and read the file, the server returns the content to the client.