The client cache is automatically built and maintained by the GN4 client applications. The client cache is stored in the Windows cache zone on the local machine. The Windows cache zone corresponds to the Internet Explorer cache and it is managed (emptied) through Internet Explorer or Control Panel.
The client cache contains the GN4 schema, and the image and the page thumbnails. In future it may contain other data as well, as large configuration files.
The cached GN4 schema
The GN4 schema is cached on the very first launch of a GN4 application, or at any later launch when the GN4 schema is changed and reloaded in the database and therefore results newer than the cached version of the GN4 schema.
How you can tell if the GN4 schema is loaded from cache or downloaded?
You can use Fiddler to find out if the GN4 schema is loaded from cache or downloaded.
Run Fiddler and then clear all sessions.
Start a GN4 application, and then look at the second session. If the result code is 304 and the icon is a diskette, the Body size is 0, it means the schema was loaded from the GN4 client cache:
If the schema was downloaded from the server, the result code will be 200, the icon will be XML, and the Body size will be around 1Gb:
Clearing the GN4 client cache
You can clear the GN4 client cache in the Internet Options, or by means of the Fiddler.
GN4 client cache and i4/GNPortal
I4 and GNPortal do not use the GN4 client cache.