Cache expiration - general properties

Use this dialog box to control how long content streamed from this server (origin server) to another server (cache/proxy server) is valid. You can configure the following options for this plug-in.

Item	Description
After (seconds)	Select this option to have the cache/proxy server check the origin server for updated content after a specified number of seconds has passed. The default setting is 3,600 seconds (1 hour). If the content on the origin 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 cache/proxy server update the content from the origin server each time a client requests the content from the cache/proxy server.
Never	Select this option to have the cache/proxy server never update the content from the origin server. In order to update the content, the cache/proxy server administrator must explicitly request a new version of the content.