Global traffic management system using IP anycast routing...

Details Global traffic management system using IP anycast routing... Global traffic management system using IP anycast routing...

2011-03-08

2011-03-08

Wang, Liangche A (Department: 2447)

Electrical computers and digital processing systems: multicomput

Computer network managing

C709S202000, C709S217000, C709S224000, C709S225000, C709S226000, C709S229000, C709S230000, C709S238000

Reexamination Certificate

active

07904541

ABSTRACT:
A method and apparatus for serving content requests using global and local load balancing techniques is provided. Web site content is cached using two or more point of presences (POPs), wherein each POP has at least one DNS server. Each DNS server is associated with the same anycast IP address. A domain name resolution request is transmitted to the POP in closest network proximity for resolution based on the anycast IP address. Once the domain name resolution request is received at a particular POP, local load balancing techniques are performed to dynamically select the appropriate Web server at the POP for use in resolving the domain name resolution request. Approaches are described for handling bursts of traffic at a particular POP, security, and recovering from the failure of various components of the system.

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