Configuring the WSM using Device Manager

Defining URL-based WCR expressions

You can configure up to 32 URL expressions, each 8 bytes long, for noncacheable content types. You can use up to 128 strings of 40 bytes each for URL string matching on each WSM. As each URL Web request is examined, noncacheable requests are forwarded to the origin server while requests with matching strings are redirected to a cache server.

The following table shows examples of string expressions.

The WSM is pre-configured with a list of 13 noncacheable expressions, which you can add, delete, or modify. Expressions are either known dynamic content file extensions or dynamic URL parameters, as described below.

• Dynamic content files

­	Common gateway interface files (.cgi)

­	Cold fusion files (.cfm)

­	ASP files (.asp)

­	BIN directory

­	CGI-BIN directory

­	SHTML (scripted html)

­	Microsoft HTML extension files (.htx)

­	Executable files (.exe)

• Dynamic URL parameters: +    !    %     =    &

See also:

• URL-based Web Cache Redirection
• URL-based WCR illustration
• Network address translation options
• Configuring URL-based WCR
• Content-intelligent switching
• Server load balancing basics
• Virtual server load balancing
• Load balancing special services
• Configuring filters for Layer 4 switching