Blue Coat Systems, Inc.

Symantec Corporation

Eric Maki

Kevin Porter

Marcin Lizon

Thomas J Kelly

Darrell Long

Kim Tremblay

Jennifer Vance

A policy distribution server provides, on a subscription basis, policy updates to effect desired behaviors of network intermediary devices. The policy updates may specify caching policies, and may in some instances, include instructions for data collection by the network intermediary devices. Data collected in accordance with such instructions may be used to inform future policy updates distributed to the network intermediary devices.

System and method for distributing heuristics to network intermediary devices

Data useful in analyzing the effectiveness of policies for handling transactions involving client communications is automatically collected at network intermediary devices and delivered to an analysis server as part of feedback communications from the network intermediary devices. The data may be collected according to data collection directives distributed to the network intermediary devices along with updates to policies for handling transactions, those updates being configured to alter actions of the network intermediary devices, for example to accommodate changes in behaviors of content servers from which the network intermediary devices obtain content in connection with the client communications.

System and method for distributed data collection and heuristic refinement in a network intermediary device

A caching device is configured to determine whether an object received or currently stored at the caching device should be (or continue to be) cached at the caching device, even if the object is otherwise cacheable. If so, the object is cached (or retained) at the caching device, otherwise, it is not. The determination as to whether or not the object should be cached or, if already cached, retained at the caching device may be made on the basis of a worthiness determination which evaluates the object on the basis of one or more parameters or attributes of the object, which worthiness may be one part of an overall value determination for the object.

System and method for identifying web objects unworthy of being cached

The present invention describes a system, method, and article of manufacture for resolving names received in network protocol requests by a network intermediary device coupled between a client network and a server network. A deferred trust model caching engine in the network intermediary device includes a transactor module configured to efficiently process a protocol request with a sequence of determinant criteria, although the sequence can occur in different orders. The deferred trust model caching engine includes a cacheability evaluator component configured to determine whether the protocol request is for a resource that the protocol permits to be cached by the network intermediate device, and a supplier trust evaluator component configured to compare information about the client's network protocol request and a cached object representation to determine if the object is trustworthy or not. The cached object representation associates an object with a supplier identity and a supplier trust property.

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Kitchener, Canada

Eric Maki