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Resource-Saving File Management Scheme for Online Video Provisioning on Content Delivery Networks

机译:用于内容交付网络上的在线视频供应的节省资源的文件管理方案

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Content delivery networks (CDNs) have been widely implemented to provide scalable cloud services. Such networks support resource pooling by allowing virtual machines or physical servers to be dynamically activated and deactivated according to current user demand. This paper examines online video replication and placement problems in CDNs. An effective video provisioning scheme must simultaneously (i) utilize system resources to reduce total energy consumption and (ii) limit replication overhead. We propose a scheme called adaptive data placement (ADP) that can dynamically place and reorganize video replicas among cache servers on subscribers’ arrival and departure. Both the analyses and simulation results show that ADP can reduce the number of activated cache servers with limited replication overhead. In addition, ADP's performance is approximate to the optimal solution.
机译:内容交付网络(CDN)已被广泛实施以提供可伸缩的云服务。这样的网络通过允许根据当前用户需求动态激活和停用虚拟机或物理服务器来支持资源池。本文研究了CDN中的在线视频复制和放置问题。有效的视频供应方案必须同时(i)利用系统资源来减少总能耗,并(ii)限制复制开销。我们提出了一种称为自适应数据放置(ADP)的方案,该方案可以在用户到达和离开时动态地在缓存服务器之间放置和重组视频副本。分析和仿真结果均表明,ADP可以在有限的复制开销下减少已激活的缓存服务器的数量。此外,ADP的性能接近最佳解决方案。

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