arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2207.09035cs.DScs.DCcs.NI
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PackCache:一种在线的成本驱动的云数据缓存算法

PackCache: An Online Cost-driven Data Caching Algorithm in the Cloud

Jiashu Wu, Hao Dai, Yang Wang, Yong Zhang, Dong Huang, Chengzhong Xu

摘要:

在本文中,我们研究了云环境中的数据缓存问题,其中多个经常共同使用的数据项可以打包为一个单一的项目被转移,以服务于一系列的数据请求动态降低成本。为此,我们提出了一个在线算法相对于一个同质的成本模型,称为PackCache,可以利用FP树技术挖掘那些经常共同使用的数据项进行包装,从而传入的请求可以具有成本效益的在线服务,利用预期的缓存的概念。我们证明了该算法是2α竞争的,在所研究的缓存问题上达到了任何确定性在线算法的竞争比的下限,并且在时间和空间上都有效地服务于请求。最后,我们通过实验研究来评估算法的性能,以显示其实际的成本效益和可扩展性。

英文摘要:

In this paper, we study a data caching problem in the cloud environment, where multiple frequently co-utilised data items could be packed as a single item being transferred to serve a sequence of data requests dynamically with reduced cost. To this end, we propose an online algorithm with respect to a homogeneous cost model, called PackCache, that can leverage the FP-Tree technique to mine those frequently co-utilised data items for packing whereby the incoming requests could be cost-effectively served online by exploiting the concept of anticipatory caching. We show the algorithm is 2αcompetitive, reaching the lower bound of the competitive ratio for any deterministic online algorithm on the studied caching problem, and also time and space efficient to serve the requests. Finally, we evaluate the performance of the algorithm via experimental studies to show its actual cost-effectiveness and scalability.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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