| 摘要 |
A system and method for caching files is disclosed. Popularity values are calculated for a plurality of files over a period of time. The popularity values are then used to determine which files should be cached at various remote sites. Once the caches are filled, the popularity values associated with the cached files are periodically compared with the popularity values of uncached content. Generally, if the popularity of an uncached file is greater than the popularity of a cached file, then the cached file will be replaced. However, numerous different variables may be factored into the caching determination including, for example, the size of the file, the required bitrate of the file, the identity of the owner of the file, and/or the type of file.
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