Context information

RFC 9111: HTTP caching

RFC 9111 defines how HTTP caches store, reuse and validate responses. Its rules cover freshness, validation and cache directives. The specification helps explain when a client can reuse a representation and when it must contact the origin to check for a change.

External source ↗

Provenance: IETF HTTP caching specification
Updated: 2026-11-08T22:15:36.621028Z