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arXiv 1503.00265cs.ITmath.IT
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多服务器编码缓存

Multi-Server Coded Caching

Seyed Pooya Shariatpanahi, Seyed Abolfazl Motahari, Babak Hossein Khalaj

摘要:

在本文中,我们考虑多个缓存启用客户端连接到多个服务器通过中间网络。我们设计了几个拓扑感知的编码策略,这样的网络。基于中间网络的拓扑丰富性和内部节点的编码操作类型,我们定义了三类网络,即专用网络、灵活网络和线性网络。对于每一类,我们提出了一个可实现的编码方案,分析其编码延迟,并与信息论的下界进行了比较。对于灵活的网络,我们表明,我们的计划是为了最佳的编码延迟,有趣的是,最佳的记忆延迟曲线在某些制度。在一般情况下,我们的研究结果表明,在网络中有多个服务器的情况下,网络拓扑类型可以被利用,以减少服务延迟。

英文摘要:

In this paper, we consider multiple cache-enabled clients connected to multiple servers through an intermediate network. We design several topology-aware coding strategies for such networks. Based on topology richness of the intermediate network, and types of coding operations at internal nodes, we define three classes of networks, namely, dedicated, flexible, and linear networks. For each class, we propose an achievable coding scheme, analyze its coding delay, and also, compare it with an information theoretic lower bound. For flexible networks, we show that our scheme is order-optimal in terms of coding delay and, interestingly, the optimal memory-delay curve is achieved in certain regimes. In general, our results suggest that, in case of networks with multiple servers, type of network topology can be exploited to reduce service delay.

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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