| 摘要 |
The origin server has content in block units formed by dividing the content, and includes content processing means for providing each of the blocks with an identifier including a domain which identifies each substream including the blocks. The domain resolution server includes assignment means for determining a proxy server which should be assigned for each domain identifying the substream. When the assignment means requests a proxy server of an adjacent parent site located upstream, on a path from a site in which the origin server is disposed to an edge site accessed by the client, to resolve a domain of one substream from the proxy server of the own site, the assignment means makes a domain resolution request to a domain resolution server of the parent site for assigning a proxy server, disposed in the parent site, to each of all substreams.
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