HTTP Caching (source code)

= HTTP Caching
{c}

https://www.rfc-editor.org/rfc/rfc9111.html

RFC 9111, June 2022, STD 98. Primary standard. Sections4.2 and4.3 distinguish freshness and validation; sections4.3.1 and4.3.3–4.3.4 cover validation requests, full/304 responses and updating suitable stored responses; section3.2 supplies field-update rules. Use with RFC9110 section13.1.2 for If-None-Match semantics. Editors remain exactly the published initial-only byline if author metadata is later added.