HTTP/2 and HTTP/3: Faster Web

Most developers take HTTP for granted. But recent versions have changed everything.

HTTP/1.1

Sequential. You send a request, you wait. 6 connections per domain max. This led to “domain sharding” hacks.

HTTP/2

Multiplexing. Send multiple requests over a single TCP connection.

• Result: No more domain sharding. Bundling CSS is less critical.

HTTP/3 (QUIC)

Runs on UDP, not TCP.

• Problem solved: TCP Head-of-Line Blocking (one lost packet slowing down everything).
• Result: Faster on unreliable networks (mobile).

Conclusion

Ensure your server (Nginx, Cloudflare) has HTTP/2 and HTTP/3 enabled. It’s free speed.