HTTP Servers in Node.js – onlinecode
In this post, we will give you information about HTTP Servers in Node.js – onlinecode. Here we will give you detail about HTTP Servers in Node.js – onlinecode And how to use it also give you a demo for it if it is necessary.
Node.js has a built in
http.Server class. Here’s how you can start an HTTP server
that responds to every request with the string ‘Hello, World!’:
const http = require('http'); // You usually don't call 'new http.Server()', the 'http.createServer()' // function creates a new 'Server' instance for you. const server = http.createServer((req, res) => res.end('Hello, World!')); server instanceof http.Server; // true await server.listen(3000);
Node.js’ event loop based concurrency makes it easy to test HTTP servers.
For example, you can start a server and then make an HTTP request to that
server using the Axios HTTP library without any threads.
const http = require('http'); const server = http.createServer((req, res) => res.end('Hello, World!')); server instanceof http.Server; // true await server.listen(3000); // Make an HTTP request to the server const axios = require('axios'); const res = await axios.get('http://localhost:3000'); res.data; // 'Hello, World'
Most apps use an HTTP framework rather than using the
http.Server class directly.
http.createServer() function just takes a single function as a parameter, so,
if you use Node’s HTTP server directly, you’re responsible for implementing routing,
HTTP body parsing, etc. Frameworks like Express take care
of routing and body parsing, and provide patterns for organizing your code.
However, most frameworks use
http.Server under the hood, and let you access
the raw Node.js HTTP server. For example, Express’
listen() function returns
an instance of the
const express = require('express'); const app = express(); const server = app.listen(3000); server instanceof require('http').Server; // true
Node.js is a popular choice for building web servers. This is because Node.js is very efficient at handling concurrent requests. Node.js uses a non-blocking event loop to handle requests, which means that it can handle multiple requests at the same time without slowing down.
Node.js is also a good choice for building real-time chat applications. This is because Node.js is able to push data to clients in real time without the need for polling. This makes it possible to create a smooth and responsive user experience.
Here are some of the benefits of using Node.js:
- Performance: Node.js is very efficient at handling concurrent requests. This makes it a good choice for building web servers and real-time chat applications.
- Scalability: Node.js is designed to scale horizontally. This means that you can add more nodes to your cluster to handle more traffic.
- Efficiency: Node.js uses a non-blocking event loop to handle requests. This makes it possible to handle multiple requests at the same time without slowing down.
- Community: Node.js has a large and active community. This means that there are many resources available to help you learn and use Node.js.
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