Content delivery system, cache server, and cache control server
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United States of America Patent
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May 7, 2013
Grant Date -
Apr 30, 2009
app pub date -
Jul 14, 2008
filing date -
Oct 31, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
In a cache control assuming plural user terminals accessing identical content, cache delete priority assignment is performed from a position where a user finished playback based on whether the user intends to view the content later. A cache control server is provided, and a cache delete inhibit span is determined based on a playback stop position or a normal speed playback time. A cache server deletes the cache based on the delete inhibit span received from the cache control server. Traffic of the core network due to re-cache can thus be reduced.
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