Abstract: Disclosed is a system and method that collects measurements of network performance metrics and automatically calculates and provides composite variance analysis of such metrics. The system and method can then use history of performance data statistics to alert a user about performance of network services that are outside acceptable tolerance or control limits. The technique exposes subtle deviation from accepted measurement tolerance that can, in turn, be categorized in relation to control limits based on defined standard deviation thresholds.

Abstract: In a data processing system, a mechanism identifies data items by substantially unique identifiers which depend on all of the data in the data items and only on the data in the data items. Existence means determine whether a particular data item is present in the system, by examining the identifiers of the plurality of data items.

Abstract: A system and method collects measurements of network performance metrics and automatically calculates and provides composite variance analysis of such metrics. The system and method may use history of performance data statistics to alert a user about performance of network services that are outside acceptable tolerance or control limits. The technique exposes deviation from accepted measurement tolerances that can, in turn, be categorized in relation to control limits based on defined standard deviation thresholds.

Abstract: Methods, systems, and protocols are described for securing data in transit over networks. A communication session is initiated between a client and a server. One or more communication channels can be set up between the client and the server. Each established communication channel may have zero or more intermediary nodes that are selected by the client or by the server to process information exchanged between the client and the server via the communication channels.

Abstract: Resource requests made by clients of origin servers in a network are intercepted by reflector mechanisms and selectively reflected to other servers called repeaters. The reflectors select a best repeater from a set of possible repeaters and redirect the client to the selected best repeater. The client then makes the request of the selected best repeater. The resource is possibly rewritten to replace at least some of the resource identifiers contained therein with modified resource identifiers designating the repeater instead of the origin server.

Abstract: A framework for delivery of Internet content includes a subscriber server network; and at least one domain name server constructed and adapted to provide policy-based domain name service, wherein, in response to a request to resolve a hostname, the domain name server resolves the hostname to at least one address corresponding a server in the subscriber server network based on at least one policy consideration. The framework may include a content delivery network, distinct from the subscriber server network, wherein, in response to a request to resolve a hostname, the domain name server provides at least one addresses of a server in the content delivery network based at least on the location of the requestor and other policy considerations. An address returned by the domain name server is selected based on one or more of: (a) geographic policies; (b) load share policies; (c) overflow policies; and (d) network aware policies.