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/HTTP

Age

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.

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

Feature Chrome Firefox Edge Internet Explorer Opera Safari
Basic Support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)
Feature Android Chrome for Android Edge mobile Firefox for Android IE mobile Opera Android iOS Safari
Basic Support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

See also

© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Age