Configuring the WSM using Device Manager

URL-based Web Cache Redirection

URL parsing for Web Cache Redirection is similar to URL-based server load balancing. For information, see URL-based server load balancing. However, in WCR, the target of all IP/HTTP requests is a WSM virtual server.

By using URL parsing to separate static and dynamic content requests, requests with specific URLs or URL strings are sent to designated cache servers. URL-based WCR off loads overhead processing from the cache servers by only sending defined requests to the cache server farm.

Note: The WSM supports both HTTP 1.0 and HTTP 1.1 requests.

Each request is examined and handled as described below:

• If the request is a non-GET request, such as HEAD, POST, PUT, or HTTP with cookies, it is not sent to the cache.
• If the request is an ASP or CGI request or a dynamically generated page, it is not sent to the cache.
• If the request contains a Cookie, it can optionally bypass the cache.

See also:

• Defining URL-based WCR expressions
• 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