Asynchronous and Event-Driven

Asynchronous Architecture

Node.js employs an asynchronous, non-blocking architecture, allowing multiple operations to execute concurrently. This design ensures that the server can handle numerous requests without waiting for any single operation to complete, making it highly efficient and responsive.

Event-Driven Programming

Node.js uses an event-driven programming model. This means that the server operates on events, responding to user actions or other triggers, which helps in building scalable applications that can handle a large number of simultaneous connections.

const http = require('http');

http.createServer((req, res) => {
  res.writeHead(200, { 'Content-Type': 'text/plain' });
  res.end('Hello, World!\n');
}).listen(3000, '127.0.0.1');

console.log('Server running at http://127.0.0.1:3000/');

Node.js has gained immense popularity among developers for its ability to handle server-side operations efficiently and effectively. Built on Chrome’s V8 JavaScript engine, Node.js is designed to build scalable and high-performance applications. Here, we explore the key features that make Node.js a powerful tool for server-side development.

NodeJs = Runtime Environment + Javascript library