Impact of traffic mix on caching performance in a content-centric network
Impact of traffic mix on caching performance in a content-centric network
复制标题
DOI：
10.1109/infcomw.2012.6193511
复制
发表时间：
2012-01
期刊：
影响因子：
--
通讯作者：
C. Fricker;P. Robert;James W. Roberts;Nada Sbihi
中科院分区：
文献类型：
--
作者：
C. Fricker;P. Robert;James W. Roberts;Nada Sbihi
对于一个现实的流量组合，我们评估的命中率达到了两层缓存层次结构，旨在减少互联网带宽的要求。该模型确定了四种主要类型的内容，网络，文件共享，用户生成的内容和视频点播，区分他们的流量份额，他们的人口和对象的大小和他们的受欢迎程度分布。结果表明，在接入路由器缓存视频点播提供了一个非常有利的带宽内存权衡，但其他类型的内容可能会更有效地处理在非常大容量的存储设备的核心。评估基于LRU缓存性能的简单近似值，该近似值在相关配置中证明非常准确。
For a realistic traffic mix, we evaluate the hit rates attained in a two-layer cache hierarchy designed to reduce Internet bandwidth requirements. The model identifies four main types of content, web, file sharing, user generated content and video on demand, distinguished in terms of their traffic shares, their population and object sizes and their popularity distributions. Results demonstrate that caching VoD in access routers offers a highly favorable bandwidth memory tradeoff but that the other types of content would likely be more efficiently handled in very large capacity storage devices in the core. Evaluations are based on a simple approximation for LRU cache performance that proves highly accurate in relevant configurations.