0-Rtt

• QUIC and HTTP/3: The UDP-Based Transport Revolution — 0-RTT, Connection Migration, and Stream Multiplexing Without Head-of-Line Blocking · 2026-03-06

  How QUIC rewrites the transport layer rulebook by moving TCP's reliability into userspace on top of UDP — 0-RTT handshakes, connection migration across IP addresses, and solving head-of-line blocking once and for all.