10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness

Research Article

Towards improving the efficiency of ICN packet-caches

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  • @INPROCEEDINGS{10.4108/icst.qshine.2014.256370,
        author={Yannis Thomas and George Xylomenos},
        title={Towards improving the efficiency of ICN packet-caches},
        proceedings={10th International Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness},
        publisher={IEEE},
        proceedings_a={QSHINE},
        year={2014},
        month={9},
        keywords={icn caching packet-cache transport},
        doi={10.4108/icst.qshine.2014.256370}
    }
    
  • Yannis Thomas
    George Xylomenos
    Year: 2014
    Towards improving the efficiency of ICN packet-caches
    QSHINE
    IEEE
    DOI: 10.4108/icst.qshine.2014.256370
Yannis Thomas1,*, George Xylomenos1
  • 1: Athens University of Economics and Business
*Contact email: thomasi@aueb.gr

Abstract

In-network packet-level caching is one of the most promising features offered by Information-centric Networking (ICN) architectures. In ICN, routers can use their queueing buffers as temporal storage units, thus allowing on-path caching by exploiting the network's storage resources. Packet-caches can be highly beneficial for content delivery, but they are also known to have three significant weaknesses: (i) packet-granularity produces huge cache indexes, (ii) Zipf-like content popularity penalizes the hit-ratio at core nodes and (iii) any discontinuity in the stored packets disrupts RTT-based congestion control. This paper presents OPC, a novel caching management strategy designed to support wire-speed in-network caching, while dealing with the above problems. OPC works at the object-level, thus reducing indexing requirements, is destined for access routers, thus avoiding the small hit-ratios of caches at core-nodes, and stores contiguous groups of packets, thus easing RTT-based congestion control.