该文阐述了基于协作缓存的视频点播系统的拓扑结构，对静态调度和动态迁移进行了详细设计，并给出了相应的形式化表示。
The article expatiates the topological architecture of a VOD system based on cooperative cache, designs the static schedule and dynamic migration method in detail, and formalizes the design.
位于因特网骨干网和同一接入网之间的流媒体缓存代理服务器相互协作，可以提高缓存命中率，保持负载平衡。
Cooperation of streaming media cache servers sited between the Internet backbone and an access network can increase the hit rate and keep load balancing.
位于因特网骨干网和同一接入网之间的流媒体缓存代理服务器相互协作，可以提高缓存命中率，保持负载平衡。
Cooperation of streaming media cache servers sited between the Internet backbone and an access network can increase the hit rate and keep load balancing.
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