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The Age header contains the time in seconds the object has been in a proxy cache.

The Age header is usually close to zero. If it is Age: 0, it was probably just fetched from the origin server; otherwise It is usually calculated as a difference between the proxy's current date and the Date general header included in the HTTP response.

Header type Response header
Forbidden header name no

Syntax

Age: <delta-seconds>

Directives

<delta-seconds>

A non-negative integer, representing time in seconds the object has been in a proxy cache.

Examples

Age: 24

Specifications

Specification Title
RFC 7234, section 5.1: Age Hypertext Transfer Protocol (HTTP/1.1): Caching

Browser compatibility

FeatureChromeFirefoxEdgeInternet ExplorerOperaSafari
Basic Support(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)
FeatureAndroidChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic Support(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)(Yes)

See also

Document Tags and Contributors

 Contributors to this page: fscholz
 Last updated by: fscholz,