| 摘要 |
A file distribution method is provided that is suitable for the transfer of files, such as patch files and virus definition files, to be released to an indefinite number of client terminals, and that can reduce the load concentration at a server without adding any extra hardware resources. A P2P group is constructed in advance between a plurality of client terminals. When a query is made from a client terminal to the server 22 , if any file needed is released at the server, first a search is conducted through the client terminals in the P2P group for a client terminal holding that file. If a hit is found as a result of the search, the file is acquired from that client terminal. If no hit is found, then the file is acquired from the server.
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