Key features and characteristics of Node.js include:
- Event-driven and Non-blocking I/O: Node.js follows an event-driven architecture, where I/O operations are non-blocking. This means that instead of waiting for I/O operations to complete, Node.js continues executing other tasks. This approach allows Node.js to handle a large number of concurrent connections efficiently and makes it suitable for building scalable and real-time applications.
- Asynchronous Programming: Node.js emphasizes asynchronous programming patterns using callbacks, Promises, or async/await syntax. Asynchronous operations avoid blocking the execution thread and enable efficient handling of concurrent requests, I/O operations, and data streaming.
- NPM (Node Package Manager): Node.js comes with NPM, a package manager that hosts thousands of reusable libraries and modules. NPM allows developers to easily install, manage, and share packages, accelerating the development process and enabling code reuse.
- Server-side Web Development: Node.js has become popular for server-side web development. It provides a range of frameworks and libraries, such as Express.js, that simplify the creation of web servers, RESTful APIs, and web applications. Node.js’s event-driven and non-blocking nature makes it well-suited for handling high-traffic and real-time web applications.
- Command-Line Tools: Node.js can be used to build command-line tools and scripts. It provides a rich set of APIs and modules for file system operations, networking, and system-level interactions. This makes Node.js a versatile tool for tasks like automation, build processes, and development workflows.
- Cross-platform Compatibility: Node.js is designed to be cross-platform compatible and runs on various operating systems, including Windows, macOS, and Linux. This allows developers to build applications that can run on different environments without significant modifications.