PROBLEM TO BE SOLVED: To confirm that contents providing service based on the contents is properly executed by a Web server in the case of contents distribution. ;SOLUTION: When Web contents are distributed from a master node 11-i to a replica node 11-i, whether or not a contents distribution result guarantees proper Web service is confirmed by accessing the distributed contents, using a Web service function by which the Web server is operated on the replica node 11-i.;COPYRIGHT: (C)2003,JPO
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