Lightning Talk: Envoy Upstream Enhancements

on YouTube ↗10m

" summary

Envoy adds ALPN auto-selection so upstream protocol (HTTP/2 or HTTP/1.1) negotiates in TLS and an alternate service cache remembers which protocol to prefetch connections per incoming stream, cluster-local by default or sharable between clusters. HTTP/3 support includes HTTP/3 with TCP failover using Alt-Svc and a short timeout plus 0-RTT for safe methods; Happy Eyeballs tries IPv6 then IPv4 after ~300 ms. Config switches from explicit H2 to auto modes and requires the alt-protocols cache for H3.

AI-written summary · about

" chapters (4)

1. 0:00Start
2. 1:26ALPN support
3. 3:22HTTP/3 support
4. 7:17Happy eyeballs configuration

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