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Node.js® is a JavaScript runtime that leverages Chrome’s V8 JavaScript engine. This asynchronous and event-driven runtime is purpose-built for developing scalable network applications. Node.js utilizes an event-driven, non-blocking I/O model, making it exceptionally lightweight and efficient. It excels in handling data-intensive real-time applications that span distributed devices.

Key Features of Node.js:

Asynchronous and Event-Driven: Node.js libraries employ asynchronous, non-blocking APIs. This means a Node.js server doesn’t pause for an API to return data but continues processing. Event-driven mechanisms in Node.js allow servers to receive responses from previous API calls.

Exceptional Speed: Powered by Google Chrome’s V8 JavaScript Engine, Node.js executes code very swiftly.

Single-Threaded yet Highly Scalable: Node.js follows a single-threaded model with event looping. This approach enables servers to respond in a non-blocking manner, resulting in remarkable scalability compared to traditional servers like Apache HTTP Server, which rely on limited threads to handle requests.

No Buffering: Node.js applications do not buffer data, ensuring efficient data processing.

In summary, Node.js is a high-performance, event-driven JavaScript runtime ideal for building responsive, real-time network applications. Its non-blocking, single-threaded architecture sets it apart, allowing developers to create scalable applications capable of handling numerous concurrent requests.