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Node js tutorial step by step 3 Multiple RequestsExplanation Video Lecture | The Complete NodeJS Developer Course (in Hindi) - Back-End Programming
FAQs on Node js tutorial step by step 3 Multiple RequestsExplanation Video Lecture - The Complete NodeJS Developer Course (in Hindi) - Back-End Programming
| 1. What is Node.js and why is it used in back-end programming? |  |
Node.js is a runtime environment for executing JavaScript code outside of a web browser. It is built on Chrome's V8 JavaScript engine and allows developers to write server-side applications using JavaScript. Node.js is used in back-end programming because it provides an event-driven, non-blocking I/O model, which makes it efficient for handling multiple requests and scalable for handling large amounts of traffic.
| 2. How does Node.js handle multiple requests simultaneously? | |
Node.js uses an event-driven, non-blocking I/O model to handle multiple requests simultaneously. When a request is received, Node.js registers a callback function to be executed once the I/O operation is complete. This allows Node.js to continue processing other requests while waiting for I/O operations to finish. Once the I/O operation is complete, the callback function is invoked, and the response is sent back to the client.
| 3. Can Node.js handle heavy traffic and scale well? | |
Yes, Node.js is designed to handle heavy traffic and scale well. Its event-driven, non-blocking I/O model allows it to efficiently handle multiple requests simultaneously. Additionally, Node.js has a built-in module called "cluster" that allows developers to take advantage of multi-core systems, enabling the application to scale by creating multiple instances of the Node.js process and distributing the incoming requests across them.
| 4. How does Node.js differ from traditional server-side languages like PHP or Java? | |
Node.js differs from traditional server-side languages in several ways. Firstly, it uses JavaScript as the programming language, which is primarily known for its use in client-side scripting. Secondly, Node.js is event-driven and non-blocking, whereas traditional server-side languages are usually synchronous and blocking. This means that Node.js can handle concurrent requests more efficiently. Lastly, Node.js has a rich ecosystem of npm (Node Package Manager) modules that provide ready-to-use functionalities, making it easier for developers to build applications.
| 5. Can Node.js be used for real-time applications like chat or streaming? | |
Yes, Node.js is well-suited for real-time applications like chat or streaming. Its event-driven, non-blocking I/O model allows it to handle multiple concurrent connections efficiently. This makes it a good choice for applications that require real-time communication between the server and clients, as it can handle a large number of connections and push data to clients in real-time without the need for continuous polling.
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Nov 25, 2024 Last updated |
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