Chapter 5 Settings for Interfaces and Network Services
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 ob- jects 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 5.25 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. Ob- jects 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 num- ber of any symbols and characters) and ? (question mark substitutes a single character or symbol) wildcard symbols. Example: Search for the *ker?o* string lists all objects with URL matching the specification, such as kerio, kerbo, etc.
Each line with an object includes URL of the object, its size in bytes (B) and number of hours representing time left to the expiration. To keep the list simple and
The Remove button can be used to delete the selected object from the cache.
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