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
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Age | Chrome Full support Yes | Edge Full support 12 | Firefox Full support Yes | IE Full support Yes | Opera Full support Yes | Safari Full support Yes | WebView Android Full support Yes | Chrome Android Full support Yes | Firefox Android Full support Yes | Opera Android Full support Yes | Safari iOS Full support Yes | Samsung Internet Android Full support Yes |
Legend
- Full support
- Full support