07523181 is referenced by 204 patents and cites 61 patents.

A method for determining metrics of a content delivery and global traffic management network provides service metric probes that determine the service availability and metric measurements of types of services provided by a content delivery machine. Latency probes are also provided for determining the latency of various servers within a network. Service metric probes consult a configuration file containing each DNS name in its area and the set of services. Each server in the network has a metric test associated with each service supported by the server which the service metric probes periodically performs metric tests on and records the metric test results which are periodically sent to all of the DNS servers in the network. DNS servers use the test result updates to determine the best server to return for a given DNS name. The latency probe calculates the latency from its location to a client's location using the round trip time for sending a packet to the client to obtain the latency value for that client. The latency probe updates the DNS servers with the clients' latency data. The DNS server uses the latency test data updates to determine the closest server to a client.

Title
Method for determining metrics of a content delivery and global traffic management network
Application Number
9/909711
Publication Number
7523181 (B2)
Application Date
July 19, 2001
Publication Date
April 21, 2009
Inventor
Ajit K Gupta
Fremont
CA, US
Richard David Day
Mountain View
CA, US
Eric Sven Johan Swildens
Mountain View
CA, US
Agent
Hickman Palermo Truong & Becker
Kirk D Wong
Assignee
Akamai Technologies
MA, US
IPC
G06F 15/173
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