Changing Web Cache Settings - Fortinet FortiGate Series Administration Manual

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Changing web cache settings

Select a time frame to show bandwidth optimization. You can select:

Last 10 Minutes

Last 1 Month

Select All to display bandwidth optimization for all applications. Select an

individual protocol to display bandwidth optimization for that individual

Select to display bandwidth optimization with a line chart or a column chart.

In most cases the default settings for the WAN optimization web cache are acceptable.

However, you may want to change them to improve performance or optimize the cache for

your configuration. To change these settings, go to WAN Opt. & Cache > Cache.

Note: For more information about many of these web cache settings, see

Figure 431: Web Cache Settings

Always revalidate

Select to always revalidate requested cached object with content on the

server before serving it to the client.

Max Cache Object

Set the maximum object size to cache. The default size is 512000 KB. This

object size determines the maximum object size to store in the web cache.

Objects retrieved that are larger than the maximum size are still delivered to

the client but are not stored in the web cache.

Negative Response

Set how long in minutes to cache negative responses. The default is 0,

meaning negative responses are not cached. The content server might send

a client error code (4xx HTTP response) or a server error code (5xx HTTP

response) as a response to some requests. If the web cache is configured to

cache these negative responses, it returns that response in subsequent

requests for that page or image for the specified number of minutes.

WAN optimization and web caching

FortiGate Version 4.0 MR1 Administration Guide

01-410-89802-20090903

http://docs.fortinet.com/