| 摘要 |
A method for responding to a request for a file, comprising receiving a request for a file at a selection server for the selection server to select one of a plurality of content distribution networks based upon predetermined selection criteria, the request by a client system to a file server, the selection server, file server client system, and content distribution networks all connected to an Internet; and responding to the request by providing the file from the selected content distribution network to the client system.
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