To reduce traffic on a communication network.
A data transfer management apparatus 1 includes a response control part 8 for, when an acquisition request for a content is received from a client apparatus 3, determining whether to be connected to a Web server apparatus 2 to acquire a content and return it to the requesting client apparatus 3 or to acquire the content from a cache area 7 of peer-to-peer communication established by client apparatuses 3 and 4 subordinate to the data transfer management apparatus 1 and return it to the requesting client apparatus 3 according to an index 5 making the content returned in the past associated with the destination client apparatus, and a response generation part 9 for making the content returned by the determination following determination by the response control part 8 associated with the requesting client apparatus 3 of a request source being the send-back destination, and registering them to the index 5.
JP3766966 | Internet e-mail additional service system |
JP4007936 | Control server device |
JPH04347952 | ELECTRONIC MAIL GATEWAY SYSTEM |
JPH1078902A | 1998-03-24 | |||
JP2004127189A | 2004-04-22 | |||
JP2009129386A | 2009-06-11 | |||
JPH11143759A | 1999-05-28 |
Makoto Shiokawa
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