Settings - Microsoft SharePoint

These settings allow you to configure how the system caches images and other files loaded from SharePoint servers.

SharePoint file caching
Cache timeout (minutes)	Sets the number of minutes for which the system caches files loaded from SharePoint servers. The caching is done server-side.
File size limit (kB)	Specifies the maximum SharePoint file size in kilobytes that is allowed to be cached. Setting a limit stops the file cache from using an excessive amount of memory.