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Cache "Less for More" in Information-Centric Networks

Chai, WK; He, D; Psaras, I; Pavlou, G; (2012) Cache "Less for More" in Information-Centric Networks. In: Bestak, R and Kencl, L and Li, LE and Widmer, J and Yin, H, (eds.) NETWORKING 2012. NETWORKING 2012. (pp. pp. 27-40). Springer: Berlin, Heidelberg. Green open access

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Ubiquitous in-network caching is one of the key aspects of information-centric networking (ICN) which has recently received widespread research interest. In one of the key relevant proposals known as Networking Named Content (NNC), the premise is that leveraging in-network caching to store content in every node it traverses along the delivery path can enhance content delivery. We question such indiscriminate universal caching strategy and investigate whether caching less can actually achieve more. Specifically, we investigate if caching only in a subset of node(s) along the content delivery path can achieve better performance in terms of cache and server hit rates. In this paper, we first study the behavior of NNC’s ubiquitous caching and observe that even naïve random caching at one intermediate node within the delivery path can achieve similar and, under certain conditions, even better caching gain. We propose a centrality-based caching algorithm by exploiting the concept of (ego network) betweenness centrality to improve the caching gain and eliminate the uncertainty in the performance of the simplistic random caching strategy. Our results suggest that our solution can consistently achieve better gain across both synthetic and real network topologies that have different structural properties.

Type: Proceedings paper
Title: Cache "Less for More" in Information-Centric Networks
Event: 11th International IFIP TC 6 Networking Conference
Location: Czech Tech Univ, Prague, CZECH REPUBLIC
Dates: 21 May 2012 - 25 May 2012
Open access status: An open access version is available from UCL Discovery
DOI: 10.1007/978-3-642-30045-5_3
Publisher version: https://doi.org/10.1007/978-3-642-30045-5_3
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: Software Engineering, Computer Science, Theory & Methods, Computer Science, Information-centric networking, caching, betweenness centrality, LRU CACHES
UCL classification: UCL
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng
URI: https://discovery.ucl.ac.uk/id/eprint/1377994
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