Jetty browser cache control

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Sep 182009
 

Do you use Jetty and need to change the default setting for browser cache control? Have a look at the init-param element named cacheControl in webdefault.xml.

Here’s the default configuration for the version of Jetty I use. Note the element is commented.

<!--
<init-param>
      <param-name>cacheControl</param-name>
      <param-value>max-age=3600,public</param-value>
</init-param>
-->

To enable and configure browser cache control, uncomment and edit the param-value as appropriate. The following example instructs the browser to disable all caching.

<init-param>
      <param-name>cacheControl</param-name>
      <param-value>no-store,no-cache,must-revalidate</param-value>
</init-param>

For information on Cache-Control, see RFC 2616, Section 14.9.

  2 Responses to “Jetty browser cache control”

  1. Jochen says:
    2010-04-12 at 09:48

    Thanks for this!
    But for some reason Jetty seems to ignore this. I have yet to see a response with the Cache-Control header set. The settings seems to get ignored.

  2. Mike Christianson says:
    2010-04-13 at 10:12

    Hi Jochen, I just double checked and it’s working for me:

    $ curl -si http://localhost/ | head


    HTTP/1.1 200 OK
    Date: Tue, 13 Apr 2010 17:11:31 GMT
    Accept-Ranges: bytes
    Cache-Control: no-store,no-cache,must-revalidate
    Content-Type: text/html
    Content-Length: 4339
    Last-Modified: Mon, 12 Apr 2010 21:43:54 GMT

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