Fortinet FortiGate Series Administration Manual page 694

Hide thumbs Also See for FortiGate Series:
Table of Contents

Advertisement

Changing web cache settings
694
Cache Expired
Applies only to type-1 objects. When this option is selected, expired type-1
objects are cached (if all other conditions make the object cacheable).
Objects
Revalidated Pragma-
The pragma-no-cache (PNC) header in a client's request can affect the
efficiency of the FortiGate unit's bandwidth. If you do not want to completely
no-cache
ignore PNC in client requests (which you can do by selecting to ignore
Pragma-no-cache, above), you can nonetheless lower the impact on the
bandwidth by selecting Revalidate Pragma-no-cache. When this option is
selected, a client's non-conditional PNC-GET request results in a conditional
GET request sent to the OCS if the object is already in the cache. This gives
the OCS a chance to return the 304 Not Modified response, which consumes
less server-side bandwidth, because the OCS has not been forced to
otherwise return full content. By default, Revalidate Pragma-no-cache is
disabled and is not affected by changes in the top-level profile. When the
Substitute Get for PNC configuration is enabled, the revalidate PNC
configuration has no effect.
Most download managers make byte-range requests with a PNC header. To
serve such requests from the cache, you should also configure byte-range
support when you configure the Revalidate pragma-no-cache option.
WAN optimization and web caching
FortiGate Version 4.0 MR1 Administration Guide
01-410-89802-20090903
http://docs.fortinet.com/
Feedback

Advertisement

Table of Contents
loading

Table of Contents