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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
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.
Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | Servo |
---|---|---|---|---|---|---|---|
Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |
Feature | Android | Chrome for Android | Edge Mobile | Firefox for Android | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|---|---|
Basic Support | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) | (Yes) |