To more rapidly perform recovery processing for failure in a state that consistency in a database between bases is maintained in part, in an ACT-ACT configuration.
When a latest high-priority information recovery part 104 obtains request contents of a high-priority request and high-priority information from an information processing apparatus B120 and stores (restores) them into an information storage part 101, a service provision start part 105 starts service provision processing to a client 140. By the start of the service provision processing, the information processing apparatus A100 receives a service request from the client 140, and provides a service corresponding to the received request to the client 140.
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