Persistent Caching in Information-Centric Networks

Anastasiades, Carlos; Nobre Gomes, André Sérgio; Gadow, Rene; Braun, Torsten (October 2015). Persistent Caching in Information-Centric Networks. In: 40th Annual IEEE Conference on Local Computer Networks (LCN 2015) (pp. 64-72). IEEE 10.1109/LCN.2015.7366284

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Information-centric networking (ICN) is a new communication paradigm that aims at increasing security and efficiency of content delivery in communication networks. In recent years, many research efforts in ICN have focused on caching strategies to reduce traffic and increase overall performance by decreasing download times. Since caches need to operate at line speed, they have only a limited size and content can only be stored for a short time. However, if content needs to be available for a longer time, e.g., for delay-tolerant networking or to provide high content availability similar to content delivery networks (CDNs), persistent caching is required. We base our work on the Content-Centric Networking (CCN) architecture and investigate persistent caching by extending the current repository implementation in CCNx. We show by extensive evaluations in a YouTube and webserver traffic scenario that repositories can be efficiently used to increase content availability by significantly increasing cache hit rates.

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