Asynchronous programming in Node js

 Asynchronous programming: Asynchronous programming is a programming paradigm that allows code to continue running while waiting for a response from an asynchronous operation. In Node.js, asynchronous programming is achieved using callbacks or Promises. Here's an example of how to use Promises in Node.js:

javascript

const fs = require('fs').promises;

fs.readFile('/path/to/file')

  .then((data) => console.log(data))

  .catch((err) => console.error(err));