Cache-Control

Controls caching behavior in browsers and shared caches.

Use explicit directives such as max-age, no-cache, no-store, private, and public according to the sensitivity and freshness requirements of each response. Each directive has its own entry in this library.

httpcacheheader

Reference (http)

Cache-Control: public, max-age=3600
Cache-Control: no-store

Common mistakes

Using no-cache when the requirement is no-store; no-cache permits storage but requires revalidation.

IANA registry: http-fields/field-names

Registry reference: RFC 9111, Section 5.2: HTTP Caching

Cache-Control: max-age Cache-Control: s-maxage Cache-Control: no-cache Cache-Control: no-store Cache-Control: must-revalidate Cache-Control: proxy-revalidate Cache-Control: must-understand Cache-Control: stale-while-revalidate Cache-Control: stale-if-error Cache-Control: immutable

Sources