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A collaborative caching scheme with network clustering and hash-routing in CCN

机译：CCN中具有网络群集和哈希路由的协作式缓存方案

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摘要

Content-Centric Networking (CCN) proposals rethink the communication model around named data. In-network caching is a fundamental feature to distinguish the CCN from the current host-centric IP network. Caching scheme by hash-routing is a prominent solution as it enables a joint consideration of content placement and request-to-cache routing through a hash function, and therefore, makes the cached contents visible in the domain and meanwhile, eliminates the content redundancy. In this paper, we present here a collaborative caching scheme in a CCN AS domain, which can fully exploit in-network caching by network clustering and hash-routing. Specifically, a heuristic algorithm is proposed to dynamically adjust caching capacity of each cluster based on its egress traffic while controlling the total path stretch incurred. The proposed scheme can improve the caching utility and reduce caching redundancy. Extensive experiments have been performed to evaluate the proposed scheme. Simulation results show that the proposed is effective and outperforms the existing caching mechanisms in CCN.
机译：以内容为中心的网络（CCN）提议重新考虑了围绕命名数据的通信模型。网络内缓存是将CCN与当前以主机为中心的IP网络区分开的基本功能。通过哈希路由的缓存方案是一个杰出的解决方案，因为它可以通过哈希函数共同考虑内容放置和请求到缓存的路由，因此，使缓存的内容在域中可见，同时消除了内容冗余。在本文中，我们在这里提出一种在CCN AS域中的协作缓存方案，该方案可以通过网络聚类和哈希路由来充分利用网络内缓存。具体而言，提出了一种启发式算法，可在控制发生的总路径扩展的同时，根据每个集群的出站流量动态调整其缓存容量。所提出的方案可以提高缓存的实用性并减少缓存的冗余。已经进行了广泛的实验以评估所提出的方案。仿真结果表明，该方法是有效的，并且优于CCN中现有的缓存机制。

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