Patent ID: 7464151
Filing Date: 2008-12-09
Classification: H04L

Abstract:
1. A high availability data store system, comprising: two or more data centers, each data center comprising: a load balancer operable to establish a session with a client, wherein the session is associated with a first application instance based on a first internet protocol address of the first application instance, the load balancer further operable to receive a plurality of client requests and to send the client requests to the first application instance using the first internet protocol address; and a name service associating the session with the first internet protocol address, wherein the load balancer looks-up the first internet protocol address using a name of the session, the name service operable, when the data center associated with the first application instance fails, to change the association of the session with the first internet protocol address to associate the session with a second internet protocol address that routes to a second application instance executing on a host computer in one of the data centers which is operable.