Patent ID: 8880665

Claim:
A system using one or more servers for providing a nonstop service, the system comprising: a plurality of node groups coupled to a control dispatch server via a network, and each of the node groups comprising a plurality of nodes, wherein each node group is configured to store and manage data of a user using a user identifier, the data being stored synchronized in time in the respective nodes and being independently managed; and a processor of the control dispatcher server to control a status of the plurality of nodes of each node group, the status corresponding to a connection, a load and a response speed of each of the plurality of nodes, wherein upon receipt of the user's data retrieval request, the control dispatcher server is configured to select one of the plurality of the node groups to provide retrieval request information, the retrieval request information corresponding to the user's data retrieval request, wherein the user's data retrieval request is simultaneously transmitted to the plurality of nodes of the selected node group; perform voting to determine most appropriate information from among recently updated information provided by the nodes of the selected node group, wherein the voting is performed based on the plurality of nodes of the selected node group providing the recently updated information to the control dispatcher server; and provide most recently updated information to the user, the most recently updated information being the most appropriate information.