HTTP 2

on YouTube ↗48m

" summary

RFC 7540 ships May 2015 and HTTP/2 is already in broad deployment: about 14% of Firefox requests are HTTP/2 (≈30% of HTTPS), Apache Traffic Server sees ~40% HTTP/2, Google reported ~18% in older data. The protocol uses binary framing with a small set of frame types, HPACK header compression (RFC 7541), multiplexed streams and per-stream flow control/dependencies, plus server push; browsers require TLS1.2+, which avoids middlebox breakage. Result: far fewer TCP connections (from ~40 down to ~10–20), noticeably faster page loads in practice.

AI-written summary · about

" chapters (9)

1. 0:00Start
2. 0:28HTTP Today HTTP/2 basics Status
3. 6:03HTTP 1.1 workarounds
4. 9:55RFC 7540
5. 14:38less optional parts no minor version!
6. 15:14No more telnet trick Easier framing TLS and compression anyway Wireshark inspector frame types, like HEADERS and DATA
7. 24:11headers are big and repetitive 1.1 has no header compression HPACK
8. 29:24TLS version 1.2+ only Stricter cipher suite requirements No compression No renegotiations
9. 32:53Mandatory TLS Changing HTTP headers

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