| 基于块的逻辑层次集群:一种分布式多媒体点播服务器的体系结构 |
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| 引用本文： | 熊旭辉,余胜生,周敬利.基于块的逻辑层次集群:一种分布式多媒体点播服务器的体系结构[J].上海大学学报(英文版),2006,10(2):127-133. |
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| 作者姓名： | 熊旭辉 余胜生 周敬利 |
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| 作者单位： | National Storage System Laboratory Department of Computer Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China，National Storage System Laboratory Department of Computer Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China，National Storage System Laboratory Department of Computer Science and Engineering Huazhong University of Science and Technology Wuhan 430074 P.R. China |
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| 基金项目： | ProjectsupportedbyNationalNaturalScienceFoundationofChina(GrantNo.60373088) |
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| 摘 要： | 1Introduction Thispaperfocusesondevelopingalogicalhierarchi calcluster(LHC)foreachblockofmultimediaobjects asthedecentralizedarchitectureofthedistributed multimediaondemand(DMoD)server.Becausethe aggregatedbandwidthrequirementofthegeographical lydistributedusersisincreasingbeyondthecapacityof thenetworkbackbone,theDMoDschemeisproposed todistributetheloadoftheinteractiveMoDserviceto thenodeslocatedatthedifferentgeographical admini strativeregions.ThenetworktopologyG(V,E)and theresourceman…
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| 关 键 词： | 原始复制 多媒体 点播 服务器 分布式 逻辑层次集群 块 |
| 文章编号： | 1007-6417（2006）02-0127-07 |
| 收稿时间： | 2004-07-07 |
| 修稿时间： | 2004-11-26 |
Block-based logical hierarchical cluster for distributed multimedia architecture on demand server |
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| Xu-hui Xiong Ph. D. Candidate,Sheng-sheng Yu Prof.,Jing-li Zhou.Block-based logical hierarchical cluster for distributed multimedia architecture on demand server[J].Journal of Shanghai University(English Edition),2006,10(2):127-133. |
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| Authors: | Xu-hui Xiong Ph D Candidate Sheng-sheng Yu Prof Jing-li Zhou |
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| Institution: | National Storage System Laboratory, Department of Computer Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, P.R. China |
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| Abstract: | A structure of logical hierarchical cluster for the distributed multimedia on demand server is proposed. The architecture is mainly composed of the network topology and the resource management of all server nodes. Instead of the physical network hierarchy or the independent management hierarchy, the nodes are organized into a logically hierarchical cluster according to the multimedia block they caches in the midderware layer. The process of a member joining/leaving or the structure adjustment cooperatively implemented by all members is concerned with decentralized maintenance of the logical cluster hierarchy. As the root of each logically hierarchical cluster is randomly mapped into the system, the logical structure of a multimedia block is dynamically expanded across some regions by the two replication policies in different load state respectively. The local load diversion is applied to fine-tune the load of nodes within a local region but belongs to different logical hierarchies. Guaranteed by the dynamic expansion of a logical structure and the load diversion of a local region, the users always select a closest idle node from the logical hierarchy under the condition of topology integration with resource management. |
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| Keywords: | logical hierarchical cluster early replication instantaneous replication local load diversion constrained server selection |
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