Distributed server's failure response program product, server load balancing device, and server load balancing method

摘要

In a device according to the present invention, a failed server session persistence information managing unit transfers relevant session persistence information from a session persistence information storing unit to a failed server session persistence information storing unit, upon receipt of a failure detection notice from a distributed server. A session persistence information retrieving unit searches the session persistence information storing unit upon inquiry about session persistence information, and further searches the failed server session persistence information storing unit when information corresponding to the inquiry cannot be extracted from the session persistence information storing unit. A service error response processing unit sends a predetermined service error response to a client when the corresponding information is extracted from the failed server session persistence information storing unit.