项目名称: 内容中心网络中基于节点内嵌存储的缓存优化技术研究
项目编号: No.61202419
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 计算机科学学科
项目作者: 李杨
作者单位: 中国科学院信息工程研究所
项目金额: 24万元
中文摘要: 内容中心网络是为了适应人类对互联网的主要需求从端到端通信向内容获取这一转变而提出的新型网络体系架构。基于节点内嵌存储和多径转发这两点体系结构的革新为灵活高效的缓存优化策略提供了基础。本课题旨在该体系架构下,根据网络化缓存的新特点(广域性、无结构、chunk-level、线速要求和多径等),研究新的缓存策略设计的科学与方法,着重探索不同的网络拓扑结构、节点能力、缓存大小设计、缓存协作机制和替换算法及其相互关系对缓存优化设计目标(保障用户的资源下载速度和较低延迟,提高链路利用率,优化网络传输效率,降低缓存设计代价,减少ISP域间流量)的作用,平衡多径转发与缓存策略之间的效率与公平,为实现高效能的未来网络缓存优化技术提供科学理论与系统方法。通过理论研究和验证输出诸如节点缓存大小分配、域内副本放置、与缓存协同的多径选择等方案,为将来内嵌存储型路由器节点在实际网络中的应用部署提供有力的技术支撑。
中文关键词: 缓存;节点内嵌存储;多径;沿路径缓存;内容中心网络
英文摘要: The content-centric network is new network architecture proposed in order to adapt the needs change of Internet from the end-to-end communication to the content obtaining. The architecture renovation based on the nodes build-in storage and the multipath forwarding facilitates the realization about the flexible and effective caching optimization strategy. The main purpose of this project is to provide the scientific design method about the caching strategy in the new network architecture, considering the new caching characteristics (such as large and arbitrary topology, chunk-level, line speed requirement and multipath); to explore the effect on the objective of caching optimization strategy (high download speed and low latency, high link utilization, high transmission efficiency, low design cost, low traffic between ISP, etc.) imposed by the topology, node capability, cache size, coordinate caching and replacement strategy; to balance the efficiency and the fairness between the multipath forwarding and cache strategy. The scheme outputs about node cache size allocation, content copy placement, the multipath choose with coordinate caching will provide the technique support for the future real network application of the build-in storage router.
英文关键词: caching;build-in storage;multipath;en-route caching;content-centric network