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Manual Chapter: Proxying Requests and Responses
Manual Chapter
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Overview: Proxying rules

In general, the BIG-IP system attempts to service all HTTP requests from the system's cache. However, if you have certain types of content that you do not want the BIG-IP system to service from the system's cache, you can configure proxying rules. Using proxying rules, you identify HTTP request elements that prompt the BIG-IP system to send a request to your origin web servers for content.

You configure proxying rules from the proxying screen.

Proxying rules parameters

The proxying rule parameters consist of several components.

  • Proxying Options. This setting provides the following options.
    • Always proxy requests for this node. When you select this option, the BIG-IP sends all requests that match the associated node to the origin web server for content. This option overrides any configured proxying rules.
    • Configure and use Proxy Rules for this node. When you select this option, the BIG-IP applies configured proxy rules to requests that match the associated node.
  • BIG-IP Cache Mode. You can select one of the following caching modes for the node to cache objects defined by override rules.
    • Memory & Disk Cache. When you select this setting, the BIG-IP caches objects for the selected node to memory and disk cache.
    • Memory-only Cache. When you select this setting, the BIG-IP caches objects for the selected node only to memory. In the event of power loss, memory is cleared, providing greater security.
  • Proxy Rules. For this option, you can define specific parameters for proxying rules. In general, proxy rules options are only relevant to requests that match their node, rather than to matched responses.
  • Proxy Override Rules. For this option, you can define parameters and associated conditions under which the BIG-IP should ignore proxying rules options.
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