Intel 1520 manual Setting Http parent caching options

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parent

failover

Setting HTTP parent caching options

The appliance can participate as a member of an HTTP cache hierarchy. You can point your appliance at a parent network cache—either another Intel NetStructure Cache Appliance or a different caching product—to form a cache hierarchy, wherein a child cache relies upon a parent cache in fulfilling user requests.

You can specify more than one parent cache to be queried. If the first parent cache does not respond to the request, the appliance tries the next parent cache.

The appliance supports multiple parent caches and parent failover. Use the command-line interface to configure multiple parent caches and parent failover (which gives appliance a sequence of parent caches to query if the first parent cache misses). See Controlling parent proxy caching‚ on page 89.

The following table describes the options.

Option	Description
Parent Caching	Enables or disables parent caching. To set parent caching
on/off	on, you must also name a parent cache.
Parent Cache	Identifies the parent cache and port. Using the following
	format: parent_name:port_number. The port must be
	dedicated. If the appliance cannot find a requested object in
	its own cache, it searches the parent cache before
	searching the Internet. If you want parent failover, you can
	specify more than one parent cache; for example,
	parent1:port1; parent2:port2

40Intel NetStructure Cache Appliance Administrator’s Guide