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Description |
Brief description of the parameter map. Enter a text string with a maximum of 240 alphanumeric characters (A–Z, a–z, 0–9). Spaces and special characters are allowed. Double quotes must be entered as matching pairs. |
Set Browser Freshness Period |
Select the method that the ACE is to use to determine the freshness of objects in the client’s browser:
- N/A—This option is not configured.
- Disable Browser Object Freshness Control—Browser freshness control is not to be used
- Set Freshness Similar To Flash Forward Objects—The ACE is to set freshness similar to that used for FlashForwarded objects and to use the values specified in the Maximum Time for Cache Time-To-Live and Minimum Time for Cache Time-To-Live fields.
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Duration For Browser Freshness (Seconds) |
This field appears if the Set Browser Freshness Period option is not configured. Enter the number of seconds that objects in the client’s browser are considered fresh. Valid entries are 0 to 2147483647 seconds. |
Response Codes To Ignore (Comma Separated) |
Enter a comma-separated list of HTTP response codes for which the response body must not be read. For example, an entry of 302 indicates that the ACE is to ignore the response body of a 302 (redirect) response from the origin server. Valid entries are unquoted text strings with a maximum of 64 alphanumeric characters and integers from 100 to 599, inclusive. |
Appscope Optimize Rate (%) |
Enter the percentage of all requests or sessions to be sampled for performance with acceleration (or optimization) applied. All applicable optimizations for the class will be performed. Valid entries are from 0 to 100 percent, with a default of 10 percent. The sum of this value and the value entered in the Passthru Rate Percent field must not exceed 100. |
Appscope Passthrough Rate (%) |
Enter the percentage of all requests or sessions to be sampled for performance without optimization. No optimizations for the class will be performed. Valid entries are from 0 to 100, with a default of 10 percent. The sum of this value and the value entered in the Optimize Rate Percent field must not exceed 100. |
Max. Number for Parameter Summary Log (Bytes) |
Enter the maximum number of bytes that are to be logged for each parameter value in the parameter summary of a transaction log entry in the statistics log. If a parameter value exceeds this limit, it is truncated at the specified limit. Valid entries are 0 to 10,000 bytes. |
Max. For Post Data to Scan for Logging (KBytes) |
Enter the maximum number of kilobytes of POST data the ACE is to scan for parameters for the purpose of logging transaction parameters in the statistics log. Valid entries are 0 to 1000 KB. |
String For Grouping Requests |
Enter the string the ACE is to use to sort requests for AppScope reporting. The string can contain a URL regular expression that defines a set of URLs in which URLs that differ only by their query parameters are to be treated as separate URLs in AppScope reports. For example, to define a string that is used to identify the URLs http://server/catalog.asp?region=asia and http://server/catalog.asp?region=america as two separate reporting categories, you would enter http_query_param(region) . Valid entries contain 1 to 255 characters and can contain the parameter expander functions listed in Table 8-6. |
Base File Anonymous Level |
Information that is common to a large set of users is generally not confidential or user-specific. Conversely, information that is unique to a specific user or a small set of users is generally confidential or user-specific. The anonymous base file feature enables the ACE to create and deliver condensed base files that contain only information that is common to a large set of users. No information unique to a particular user, or across a very small subset of users, is included in anonymous base files. Enter the value for base file anonymity for the all-user condensation method. Valid entries are integers from 0 to 50; the default value of 0 disables the base file anonymity feature. |
Cache-Key Modifier Expression |
A cache object key is a unique identifier that is used to identify a cached object to be served to a client, replacing a trip to the origin server. The cache key modifier feature allows you to modify the canonical form of a URL; that is, the portion before “?” in a URL. For example, the canonical URL of “http://www.xyz.com/somepage.asp?action=browse&level=2” is “http://www.xyz.com/somepage.asp”. 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. Valid entries are unquoted text strings with no spaces and a maximum of 255 alphanumeric characters. If the string includes spaces, enclose the string with quotation marks (“). |
Min. Time For Cache Time-To-Live (Seconds) |
Enter the minimum number of seconds that an object without an explicit expiration time should be considered fresh in the ACE cache. This value specifies the minimum time that content can be cached. If the ACE is configured for FlashForward optimization, this value should normally be 0. If the ACE is configured for dynamic caching, this value should indicate how long the ACE should cache the page. (See Table 5-16 for information about these configuration options.) Valid entries are 0 to 2147483647 seconds. |
Max. Time For Cache Time-To-Live (Seconds) |
Enter the maximum number of seconds that an object without an explicit expiration time should be considered fresh in the ACE cache. Valid entries are 0 to 2147483647 seconds. |
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.
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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. |
Exclude JavaScripts From Delta Optimization |
Check the check box to indicate that delta optimization is not to be applied to JavaScript. Clear the check box to indicate that delta optimization is to be applied to JavaScript. |
MIME Types To Exclude From Delta Optimization |
1. In the first field, enter a comma-separated list of the MIME (Multipurpose Internet Mail Extension) type messages that are not to have delta optimization applied, such as image/Jpeg, text/html, application/msword, or audio/mpeg. See Supported MIME Types for a list of supported MIME types. 2. Click Add to add the entry to the list box on the right. You can position the entries in the list box by using the Up and Down buttons. |
Remove HTML META Elements From Documents |
Check the check box to indicate that HTML META elements are to be removed from documents to prevent them from being condensed. Clear the check box to indicate that HTML META elements are not to be removed from documents. |
Set Flash Forward Refresh Policy |
Select the method the ACE is to use to refresh stale embedded objects:
- N/A—This option is not configured.
- Allow Flash Forward To Indirect Refresh Of Objects—The ACE is to use FlashForward to indirectly refresh embedded objects.
- Bypass Flash Forward To Direct Refresh Of Objects—The ACE is to bypass FlashForward for stale embedded objects so that they are refreshed directly.
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Rebase Delta Optimization Threshold (%) |
Enter the delta threshold, expressed as a percent, when rebasing is to be triggered. This entry represents the size of a page delta relative to total page size, expressed as a percent. This entry triggers rebasing when the delta response size exceeds the threshold as a percentage of base file size. Valid entries are 0 to 10000 percent. |
Rebase Flash Forward Threshold (%) |
Enter the threshold, expressed as a percent, when rebasing is to be triggered based on the percent of FlashForwarded URLs in the response. This entry triggers rebasing when the difference between the percentages of FlashForwarded URLs in the delta response and the base file exceeds the threshold. Valid entries are 0 to 10000 percent. |
Rebase History Size (Pages) |
Enter the number of pages to be stored before the ACE resets all rebase control parameters to zero and starts over. This option prevents the base file from becoming too rigid. Valid entries are 10 to 2147483647. |
Rebase Modify Cool-Off Period (Seconds) |
Enter the number of seconds after the last modification before performing a rebase. Valid entries are 1 to 14400 seconds (4 hours). |
Rebase Reset Period (Seconds) |
Enter the period of time, in seconds, for performing a meta data refresh. Valid entries are 1 to 900 seconds (15 minutes). |
Override Client Request Headers |
Indicate how the ACE is to handle client request headers (primarily for embedded objects):
- N/A—This feature is not enabled.
- All Cache Request Headers Are Ignored—The ACE is to ignore all cache request headers.
- Overrides The Cache Control: No Cache HTTP Header From A Request—The ACE is to ignore cache control request headers that state no cache.
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Override Server Response Headers |
Indicate how the ACE is to handle origin server response headers (primarily for embedded objects):
- N/A—This feature is not enabled.
- All Cache Request Headers Are Ignored—The ACE is to ignore all response headers.
- Overrides The Cache Control: Private HTTP Header From A Response—The ACE is to ignore cache control response headers that state private.
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UTF-8 Character Set Threshold |
The UTF-8 (8-bit Unicode Transformation Format) character set is an international standard that allows Web pages to display non-ASCII or non-English multibyte characters. It can represent any universal character in the Unicode standard and is backwards compatible with ASCII. Enter the number of UTF-8 characters that need to appear on a page to constitute a UTF-8 character set page. Valid entries are integers from 1 to 1,000,000. |
Server Load Threshold Trigger (%) |
The server load threshold trigger indicates that the time-to-live (TTL) period for cached objects is to be based dynamically on server load. With this method, TTL periods increase if the current response time from the origin sever is greater than the average response time and decrease if the current response time from the origin server is less than the average response time when the difference in response times exceeds a specified threshold amount. Enter the threshold, expressed as a percent, at which the TTL for cached objects is to be changed. Valid entries are from 0 to 100 percent. |
Server Load Time-To-Live Change (%) |
This option specifies the percentage by which the cache TTL is increased or decreased in response to a change in server load. For example, if this value is set to 20 and the current TTL for a response is 300 seconds. and if the current server response times exceeds the trigger threshold, the cache TTL for the response is raised to 360 seconds. Enter the percent by which the cache TTL is to be increased or decreased when the server load threshold trigger is met. Valid entries are from 0 to 100 percent. |
Delta Optimization Mode |
Select the method by which delta optimization is to be implemented:
- N/A—This option is not configured.
- Enable The All-User Mode For Delta Optimization—The ACE is to generate the delta against a single base file that is shared by all users of the URL. This option is usable in most cases if the structure of a page is common across all users, and the disk space overhead is minimal.
- Enable The Per-User Mode For Delta Optimization—The ACE is to generate the delta against a base file that is created specifically for that user. This option is useful when page contents, including layout elements, are different for each user, and delivers the highest level of condensation. However, this increases disk space requirements because a copy of the base page that is delivered to each user is cached. This option is useful when privacy is required because base pages are not shared among users.
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String To Be Used For Server HTTP Header |
Use this option to define a string that is to be sent in the server header for an HTTP response. This option provides you with a method for uniquely tagging the context or URL match statement by setting the server header value to a particular string. The server header string can be used when a particular URL is not being transmitted to the correct target context or match statement. Enter the string that is to appear in the server header. Valid entries are quoted text strings with a maximum of 64 alphanumeric characters. |