| 摘要 |
A load distribution server system is provided for providing a plurality of services on demand from a client apparatus, to which a plurality of servers are connected via a network for the client apparatus. Servers operate as virtual servers for the client apparatus, and take charge of services to share respective service functions and mutually transceive keep alive messages. When the keep alive message of at least one server is not received or when reception of the keep alive message is restarted in at least one server, the service function of the server of which the keep alive message is not received is allocated to at least one other server on the basis of a predetermined priority of the service function, and a virtual server corresponding to the allocated service function is activated to provide the service of the service function.
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