What's next in the HTTP caching world
summary
Timeline of concrete cache features from HTTP/1.1 to today with examples and surprising specifics: how common directives actually behave (no-cache, no-store, max-age, stale-while-revalidate, must-revalidate, s-maxage), the 2001 Google Image use of ESI include tags with alt/continue and per-fragment TTLs, RFC additions that add Cache-Status and Targeted-Cache-Control in 2022, and emerging surrogate/server-get keys that let CDNs, Varnish and Caddy assign different TTLs and invalidate grouped keys rather than whole URLs.
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chapters (9)
- 0:00Introduction
- 1:26HTTP 1.0 standardization
- 2:30HTTP 1.1 caching
- 6:49Cache control directives
- 8:56ESI for dynamic caching
- 11:49RFC 7234 edge caching
- 12:56HTTP/2 performance
- 13:17RFC 9111 cache status
- 15:07HTTP caching future
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