| 摘要 |
PROBLEM TO BE SOLVED: To provide a configuration and a method for preventing resources of each data transfer server in a data transfer system for relaying a data request and data from being wasted, according to a predetermined network configuration. SOLUTION: Each data transfer server arranged on a network for relaying a data request and data, when receiving a data request from another data transfer server, determines whether to cache the requested data, and when determining that the data is to be cached, causes the data transfer server that caches the data to participate in a logical network, and transfers and caches the data based on the request between the data transfer servers participating in the logical network. COPYRIGHT: (C)2011,JPO&INPIT
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