Intermediate LevelNode JS

What are the core advantages of HTTP/2 in Node.js (node:http2) over HTTP/1.1?

❓ Interview Prompt: Explain `node:http2` module, binary frame protocol, header compression (HPACK), request multiplexing over a single TCP connection.

HTTP/2 ('node:http2') improves web performance over legacy HTTP/1.1:

Key Advantages:

Binary Framing: Encodes messages into binary frames rather than plain text.

Multiplexing: Sends multiple concurrent HTTP requests/responses over a single TCP connection, eliminating head-of-line blocking!

HPACK Header Compression: Compresses HTTP headers to cut network overhead.

Code Implementation Example

javascript

import http2 from 'node:http2';
import fs from 'node:fs';

const server = http2.createSecureServer({
  key: fs.readFileSync('server.key'),
  cert: fs.readFileSync('server.crt')
});

server.on('stream', (stream, headers) => {
  stream.respond({
    ':status': 200,
    'content-type': 'text/html'
  });
  stream.end('<h1>HTTP/2 Multiplexed Response</h1>');
});
server.listen(8443);

💡Creating an HTTP/2 server using node:http2.

🎯 Interview Key Takeaway

Use HTTP/2 multiplexing to serve multiple requests concurrently over a single TCP connection.

#http2#Multiplexing#HPACK#Networking#Intermediate

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