Configuring Cache expiration properties (on-demand)

Applies To: Windows Server 2008, Windows Server 2008 R2

You can configure the following options on the General tab for this property to determine the length of time that content streamed from on-demand publishing points on the origin server to remote cache/proxy servers is valid.

Item	Description
After (seconds)	Select this option to have the remote cache/proxy server check this server for updated content after a specified number of seconds has passed. The default setting is 86,400 seconds (24 hours). If the content on this server is newer than the content on the cache/proxy server, the cache/proxy server will update its content.
Immediately	Select this option to have the remote cache/proxy server update its content from this server each time a client requests the content from the cache/proxy server.
Never	Select this option to have the remote cache/proxy server never update the content from this server. To update the content, the cache/proxy server administrator must request a new version of the content.

Note

You must ensure that the Enable caching by cache/proxy servers property for the on-demand publishing point is enabled to allow a cache/proxy server to cache the content locally and stream the content to clients from the cache rather than from the origin server. To enable this property, do the following:

1. Click the on-demand publishing point on the origin server for which you want to enable this property.
   
   
2. In the details pane, click the Properties tab.
   
   
3. In Category, click the General category.
   
   
4. In Property, click Enable caching by cache/proxy servers, and then click Enable.