基于纠删码的动态副本冗余存储研究

发布时间：2019-05-09 07:40

【摘要】：为保证数据的完整性和可靠性,云存储中主要采用多副本和纠删码两种存储策略对数据进行冗余保存。针对单一冗余存储策略的不足,考虑存储开销和访问质量等方面因素,根据用户访问数据的规律,提出一种基于纠删码的动态副本冗余存储方案。采用RC纠删码来存储云中海量数据,使用曲线拟合预测访问热度,适时调整副本的数量。实验结果表明,该方案空间利用率高,能有效减小用户访问的平均延迟,提高用户访问的成功率。
[Abstract]:In order to ensure the integrity and reliability of data, two storage strategies of multi-copy and erasure code are mainly used in cloud storage to preserve data redundancy. Considering the shortcomings of single redundant storage strategy and considering the storage overhead and access quality, a dynamic replica redundancy storage scheme based on erasure codes is proposed according to the rules of user accessing data. RC erasure code is used to store massive data in cloud, curve fitting is used to predict access heat, and the number of copies is adjusted in time. The experimental results show that the proposed scheme has high spatial utilization and can effectively reduce the average delay of user access and improve the success rate of user access.
【作者单位】： 郑州大学信息工程学院;
【分类号】：TP333
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本文编号：2472594