System and method for directing clients to optimal servers in computer networks
First Claim
1. A method, comprising:
- creating, at a first Web router of a network of Web routers, a network latency map for at least one of the Web routers of the network and a client communicatively coupled to the at least one Web router using internetwork connectivity information received at the first Web router through an inter-domain routing protocol; and
disseminating the network latency map from the first Web router to one or more neighbor Web routers of the first Web router through a reliable communication protocol used for inter-Web router communication messages exchanged via the network, wherein the network latency map specifies client-to-Web router latency information between the client and the at least one Web router based on the internetwork connectivity information and latency measurements of the first Web router; and
updating a client-to-server map in response to a network latency map update only if the network latency map update specifies a better mapping than the client-to-server map based on a first sequence number associated with the network latency map update being greater than a second sequence number associated with the client-to-server map, a first distance associated with the network latency map update being less than a second distance associated with the client-to-server map, or a first result of a hashing function computed using one or more parameters of the network latency map update is less than a second result of the hashing function computed using corresponding one or more parameters of the client-to-server map.
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Accused Products
Abstract
A communication protocol includes one or more messages passed between Web routers over a reliable transmission protocol used for inter-Web router communication. These messages include information that allows the Web routers to dynamically update mappings of client addresses or address ranges to information object repository addresses based on client-to-server distance and server load. The mappings are preferably optimal mappings of the client addresses or address ranges to the information object repository addresses and the messages report updated distances from these information object repository addresses to the client addresses or address ranges. For example, the messages may report, for each updated distance, an associated client address or address range and/or an associated anchor address of a Web router co-located with an information object repository that is the subject of the message.
102 Citations
12 Claims
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1. A method, comprising:
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creating, at a first Web router of a network of Web routers, a network latency map for at least one of the Web routers of the network and a client communicatively coupled to the at least one Web router using internetwork connectivity information received at the first Web router through an inter-domain routing protocol; and disseminating the network latency map from the first Web router to one or more neighbor Web routers of the first Web router through a reliable communication protocol used for inter-Web router communication messages exchanged via the network, wherein the network latency map specifies client-to-Web router latency information between the client and the at least one Web router based on the internetwork connectivity information and latency measurements of the first Web router; and updating a client-to-server map in response to a network latency map update only if the network latency map update specifies a better mapping than the client-to-server map based on a first sequence number associated with the network latency map update being greater than a second sequence number associated with the client-to-server map, a first distance associated with the network latency map update being less than a second distance associated with the client-to-server map, or a first result of a hashing function computed using one or more parameters of the network latency map update is less than a second result of the hashing function computed using corresponding one or more parameters of the client-to-server map. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification