Installation guide

8-13
Device Manager Guide, Cisco ACE 4700 Series Application Control Engine Appliance
OL-26645-01
Chapter 8 Configuring Parameter Maps
Configuring Optimization Parameter Maps
Cache Time-To-Live
Duration (%)
Enter the percent of an object’s age at which an embedded object without an explicit expiration
time is considered fresh.
Valid entries are 0 to 100 percent.
Expression To Modify
Cache Key Query
Parameter
The cache parameter feature allows you to modify the query parameter of a URL; that is, the
portion after “?” in a URL. For example, the query parameter portion of
“http://www.xyz.com/somepage.asp?action=browse&level=2” is “action=browse&level=2”.
Enter a regular expression containing embedded variables as described in Table 8-6. The ACE
transforms URLs specified in class maps for this virtual server with the expression and variable
entered here. If no string is specified, the query parameter portion of the URL is used as the default
value for this portion of the cache key.
Valid entries are unquoted text strings with no spaces and a maximum of 255 alphanumeric
characters.
Canonical URL
Expressions (Comma
Separated)
The ACE uses the canonical URL feature to eliminate the “?” and any characters that follow to
identify the general part of the URL. This general URL is then used to create the base file. In this
way, the ACE maps multiple URLs to a single canonical URL.
Enter a comma-separated list of parameter expander functions as defined in Table 8-6 to identify
the URLs to associate with this parameter map.
Valid entries are unquoted text strings with a maximum of 255 alphanumeric characters.
Enable Cacheable
Content Optimization
This feature allows the ACE to detect content that can be cached and perform delta optimization
on it.
Check the check box to enable delta optimization of content that can be cached. Clear the check
box to disable this feature.
Enable Delta
Optimization On First
Visit To Web Page
Check the check box to enable condensation on the first visit to a Web page. Clear the check box
to disable this feature.
Min. Page Size For
Delta Optimization
(Bytes)
Enter the minimum page size, in bytes, that can be condensed. Valid entries are integers from 1 to
250000 bytes.
Max. Page Size For
Delta Optimization
(Bytes)
Enter the maximum page size, in bytes, that can be condensed. Valid entries are integers from 1 to
250000 bytes.
Set Default Client
Script
Indicate the scripting language that the ACE is to recognize on condensed content pages:
• N/A—This option is not configured.
• Javascript—The default scripting language is JavaScript.
• Visual Basic Script—The default scripting language is Visual Basic.
Exclude Iframes From
Delta Optimization
Check the check box to indicate that delta optimization is not to be applied to IFrames (inline
frames). Clear the check box to indicate that delta optimization is to be applied to IFrames.
Exclude Non-ASCII
Data From Delta
Optimization
Check the check box to indicate that delta optimization is not to be applied to non-ASCII data.
Clear the check box to indicate that delta optimization is to be applied to non-ASCII data.
Table 8-5 Optimization Parameter Map Attributes (continued)
Field Description