In the Action section, choose Preview list of objects that match invalidation

7-24 Oracle Fusion Middleware Administrators Guide for Oracle Web Cache ■ Host Name: Optional. Specify the host name and port number of the site host_name:port. Port 80 is the default port for HTTP. This field is required if the URL Path Prefix does not include http|https:host_name:portpathfilename. ■ HTTP Method: Optional. Select the HTTP request method GET or POST of the objects to be invalidated. The default value is GET. ■ URL Expression: Optional. Specify the URL of the objects to be invalidated under the URL Path Prefix. Then, specify how to match by selecting either substring for an exact string match or regular expression for a regular expression match. If no value is entered, everything under the URL Path Prefix is matched. ■ POST Body Expression: Optional. If POST is selected for the HTTP Method, enter the HTTP POST body of the objects to be invalidated, and then specify how to match by selecting either substring for a substring string match or regular expression for a regular expression match.

4. Optionally, in the CookieHeader Information section, specify the use of cookie

names or HTTP request headers used for multiple-version objects in the search criteria:

a. From the list, select Cookie or Header.

b. Provide the following information: – Cookie: Enter the cookie name used by multiple-version objects to be invalidated in the Name field, and enter its value in the Value field. – Header: Enter the HTTP request header used by the objects to be invalidated in the Name field, and enter its value in the Value field. See Section 6.5.1 to create caching rules for multiple-version objects.

5. Optionally, in the URL Parameters section, enter the name of the embedded URL

parameter used by the objects to be invalidated in the Name field, enter its value in the Value field, and then specify how to match by selecting either exact strings or regular expression. Note: If regular expression is selected for the URL Expression or POST Body Expression fields, Oracle Web Cache interprets the following reserved regular expression characters: periods ., question marks ?, asterisks , brackets [], curly braces {}, carets , dollar signs , and backslashes \. To interpret these characters literally, escape them with a backslash \. Note: If you specify a cookie that was mistakenly specified for both a multiple-version object and a session caching policy, invalidation is based on any occurrence of the cookie. To avoid excessive invalidation, configure distinct cookies for multiple-version objects Rules for Caching, Personalization, and Compression Cookie Definitions and session caching policies Rules for Caching, Personalization, and Compression Session Definitions.