tech

HTTP/3 and QUIC

http3quicnetworking

HTTP/3 is the first major HTTP version built on UDP instead of TCP, using QUIC as the transport layer.

Why QUIC

  • Faster connection establishment: 0-RTT for returning clients
  • Built-in encryption: TLS 1.3 is mandatory
  • Head-of-line blocking eliminated: one lost packet does not block all streams

Adoption

Most major CDNs and browsers already support HTTP/3. Enable it on your server today — it is a free performance win for users on unreliable networks.