Patent 11190583 was granted and assigned to NEC Corporation on November, 2021 by the United States Patent and Trademark Office.
A load balancing device which can appropriately control the number of servers in operation according to load is provided. The load balancing device which performs wide area load distribution includes a load prediction/control unit that predicts a load fluctuation of a server on the basis of a change in load information indicating a state of a load on the server and shortens a valid time of the server when the load fluctuation indicates that the load on the server decreases.