| 一种云计算数据副本动态管理策略 |
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| 作者单位： | ;1.河南师范大学计算机与信息工程学院;2.河南师范大学智慧商务与物联网技术河南省工程实验室 |
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| 摘 要： | 为了提高云计算中数据的可用性和缩短响应时间,提出了数据副本的方法.传统的静态副本方法无法适应云计算的动态性特征,针对这个问题提出了动态副本策略.首先,基于用户需求确定副本数目;然后根据局部性原理和资源可用度,确定数据副本的存储位置.最后的实验结果证明了该策略降低了平均响应时间.
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| 关 键 词： | 动态副本 云计算 zipf定律 局部性原理 可用度临界值 |
Dynamic Management Strategy for Data Replications Based on Cloud Computing |
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| Affiliation: | ,College of Computer &Information Engineering,Henan Normal University,Engineering Laboratory of Intellectual Business and Internet of Things Technologies,Henan Normal University |
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| Abstract: | In order to enhance the availability and reduce the response time of data in the cloud computing,we present the data replication scheme.The traditional static replication methods can't adapt to the dynamic characteristics of cloud computing.For this issue,we propose the dynamic replications strategy.Firstly,we compute the number of replication based of the user's demand,and then choose the storage location for data replication according to the resource availability function and locality principle.The simulation experiment proves that the dynamic data replication strategy reduces the average response time. |
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| Keywords: | dynamic replication cloud computing zipf's law locality principle availability threshold |
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