System and method for using network layer uniform resource locator routing to locate the closest server carrying specific content
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United States of America Patent
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Mar 15, 2011
Grant Date -
Jan 10, 2002
app pub date -
Apr 26, 2001
filing date -
Apr 28, 2000
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A request for an information object at an address identified by a uniform resource locator (URL) is received; and the URL is mapped to a corresponding anycast address for the information object. Thereafter, the anycast address for the information object may be resolved to a unicast address for the information object, and the information object sent to the client. The request may be received at an information object repository that is topologically closer to the client than any other information object repository. This closest information object repository may be selected according to specified performance metrics, such as: average delay from the selected information object repository to a source of the request, average processing delay at the selected information object repository, reliability of a path from the selected information object repository, available bandwidth in said path, and loads on the selected information object repository.
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