Use this topic to configure a cache rule that is associated to a URI group for the proxy server. HTTP 1.1 defines a set of rules for proxy servers to cache content. Static cache rules enable these default rules to be overridden for a given address space. In order for the rules to have meaning, enable caching on the Servers > Proxy Servers > server_name > HTTP Proxy Server Settings > Proxy settings administrative console page.
To view this administrative console page, click Servers > Proxy Servers > server_name > HTTP Proxy Server Settings > Static cache rules > URI_group.
We can edit proxy server setting fields on the Configuration tab.
Configuration tab
- URI groups
URI groups, along with the virtual host, define the scope of the address space to have cache customizations performed.
The name field cannot contain the following characters: # \ / , : ; " * ? < > | = + & % '
The name that is defined must be unique among URI groups and cannot begin with a period or a space. A space does not generate an error, but leading and trailing spaces are automatically deleted.
- Disable caching for this URI group
Disables caching for this address space. A user may wish to disable caching for a set of content servers that are known to contain sensitive or highly-personalized information.
The default is false, which indicates that caching is enabled for the URI group.
- Default expiration
The default expiration value, in seconds, that is used to determine the validity of a cached response when all other HTTP 1.1 caching-related response headers do not give guidance. The default value is sufficient in most environments.
The default expiration value is in seconds.
- Last modified factor
The percentage of a last-modified header for a response that determines the validity of a cached response when the response does not have explicit HTTP expiration headers. The default value is sufficient in most environments.
The default for this field is 0.0.
- Name of the virtual host
A virtual host that is configured using the virtual host service. This virtual host is associated with the proxy server. This attribute is one of the elements in a request that is matched by the proxy server to determine if this rule is activated.
The default for this field is none.
Related tasks
Setting up the proxy server
IBM is a trademark of the IBM Corporation in the United States, other countries, or both.