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💡 What is the Buffer class in Node.js?

It is a global object which handles raw binary data in memory (Space is allocated in RAM) allowing us to manipulate raw data streams efficiently

It is great for file I/O and Network communications

Example - Reading a binary file using buffer. fs.readFile reads binary data from file & saves in buffer. Buffer.toString(‘base64’) is used to convert raw binary data to base64

Code Instance 
const fs = require('fs');

// Read a binary file (like an image) as a buffer
fs.readFile('image.png', (err, data) => {
  if (err) throw err;

  // `data` is a Buffer containing the binary content of the file
  console.log('Original Buffer:', data);

  // Convert the Buffer to a string in base64 encoding
  // Useful when we want to send it over a network
  const base64Data = data.toString('base64');
  console.log('Base64 Encoded Data:', base64Data);
});
#nodejs