What is Node.js?

As an asynchronous event-driven JavaScript runtime, Node.js is designed to build scalable network applications. In the following “hello world” example, many connections can be handled concurrently. Upon each connection, the callback is fired, but if there is no work to be done, Node.js will sleep.

• Node.js is an asynchronous event-driven JavaScript runtime open source server environment.
• Node.js is designed to build scalable network applications.
• Node.js is cross platforms server can be installed on any operating systems. (Windows, Linux, Unix, Mac OS X, etc.)
• Node.js is similar in design to systems like Ruby’s Event Machine and Python’s Twisted.
• Node.js takes the event model a bit further.
• It presents an event loop as a runtime construct instead of as a library.

Node.js is best suitable for:

• Real-time web applications
• Streaming applications
• Messaging apps
• Chat programs
• Social media apps
• Virtual emulators
• Multiplayer games
• Collaboration tools
• API

Key Features:

• Effective performance
• Easy development process
• Reusable code
• Handle multiple requests
• Scale smoothly
• Prompt code execution
• Asynchronous and event-driven
• Supported by leading companies
• Top-notch prototyping capabilities
• Vast talent pool