Câu hỏi phỏng vấn Nodejs
Câu hỏi

What are the key features of Node.js?

Câu trả lời

Node.js is a powerful JavaScript runtime environment that has gained significant popularity for server-side programming. Below are the key features that make Node.js a preferred choice for developers:

1. Asynchronous and Non-blocking I/O

Node.js operates on a non-blocking I/O model, which means it does not wait for an API to return data. Instead, it moves to the next API after calling it and uses an event-driven model to handle responses. This feature allows Node.js to handle numerous operations concurrently, making it highly efficient for I/O-bound tasks[1][4][5][6].

2. Single-Threaded with Event Loop

Despite being single-threaded, Node.js can handle multiple connections efficiently through its event loop. This model helps in managing asynchronous I/O operations, allowing high scalability and better resource management compared to traditional servers that create a new thread for each request[1][3][4][5][6].

3. JavaScript Implementation

Node.js is built on the V8 JavaScript engine developed by Google, which compiles JavaScript directly into native machine code. This implementation allows developers to use JavaScript on both client and server sides, simplifying the development process as the same language is used throughout the application[1][4][5].

4. Fast Execution

Node.js benefits from the speed of the V8 engine, which provides fast execution of JavaScript code. This speed is advantageous for applications that require real-time performance[4][5].

5. Highly Scalable

Node.js uses a non-blocking, event-driven architecture, making it suitable for building scalable network applications. It can handle many connections simultaneously, with high throughput and low latency[1][2][3][4][5].

6. Cross-Platform Compatibility

Node.js is cross-platform, running on various operating systems such as Windows, Linux, Unix, Mac OS X, and more. This makes it a versatile platform for develop...

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