Kerio Tech Firewall6 - Manual (Page 127)

8.5 HTTP cache
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TTL
TTL of objects matching with the particular URL.
The 0 days, 0 hours option means that objects will not be cached.
Cache status and administration
WinRoute allows monitoring of the HTTP cache status as well as manipulation with objects in
the cache (viewing and removing).
Note: In older versions of WinRoute, these features were included in the web interface whereas
since 6.3.0 they are integrated in the Administration Console.
At the bottom of the Cache tab, basic status information is provided such as the current
cache size occupied and efficiency of the cache. The efficiency status stands for number of
objects kept in the cache (it is not necessary to download these objects from the server) in
proportion to the total number of queries (since the startup of the WinRoute Firewall Engine).
The efficiency of the cache depends especially on user behavior and habits (if users visit certain
webpages regularly, if any websites are accessed by multiple users, etc.) and, in a manner, it
can be also affected by the configuration parameters described above. If the efficiency of
the cache is permanently low (less than 5 per cent), it is recommended to change the cache
configuration.
Figure 8.18 HTTP cache status information
Use the Manage cache content... button to open a dialog where objects kept in cache can be
viewed, searched and/or removed.
To view objects in cache, specify the searched object in the URL entry. Objects can be specified
either by an absolute URL (without protocol) — e.g. www.kerio.com/image/menu.gif or
as a URL substring with * (substituting any number of any symbols and characters) and ?
(question mark substitutes a single character or symbol) wildcard symbols.