Node.js is a JavaScript runtime environment built on the Chrome V8 engine. It helps you quickly build scalable network applications.
Scenarios
Node.js uses an event-driven, non-blocking I/O model, which makes it lightweight and efficient. This makes it ideal for data-intensive, real-time applications that run on distributed devices. The Node.js package manager, npm, is an ecosystem of open source libraries. Common scenarios for Node.js include the following:
Real-time applications, such as online chat and real-time notification push (for example, socket.io).
Distributed applications that use existing data with efficient, parallel I/O.
Utility applications: A wide range of tools, ranging from frontend compression and deployment (for example, grunt) to large desktop applications with graphical user interfaces.
Game applications: The game realm has high requirements for real-time performance and concurrency (for example, the Pomelo framework from NetEase).
Web rendering: Improve web rendering capabilities using stable interfaces.
Unified frontend and backend programming environment: Frontend developers can quickly transition to server-side development (for example, the well-known pure JavaScript full-stack MEAN architecture).
Deployment methods
Quickly deploy a Node.js environment: Use an extension to quickly deploy a Node.js environment on your Linux system.
Manually deploy a Node.js environment: Learn how to manually install multiple versions of Node.js on Linux and Windows operating systems.