Congestion controller and method for controlling congestion of network
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United States of America Patent
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Issued Date -
Aug 24, 2006
app pub date -
Feb 8, 2006
filing date -
Feb 9, 2005
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
This invention efficiently restricts access to high-load web servers on an IP network, improves total throughput, and prevents web server and system stoppage and failures, while at the same time improving user service efficiency. After storing the association between IP addresses and host names into a memory, the congestion controller installed on the IP network controls a DNS server to acquire the IP address of a web server when a request is issued from a client to the web server, then if the web server of the IP address is judged to be congested, searches for another IP address of a non-congested web server associated with the same host name included in the memory-stored association, and forwards the client-issued request to the web server of the new IP address.
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