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Proactive Multi-tenant Cache Management for Virtualized ISP Networks

Claeys, M; Tuncer, D; Famaey, J; Charalambides, M; Latre, S; Pavlou, G; De Turck, F; (2015) Proactive Multi-tenant Cache Management for Virtualized ISP Networks. In: Granville, LZ and Gaspary, LP, (eds.) Proceedings of the 10th International Conference on Network and Service Management (CNSM). (pp. pp. 82-90). IEEE Green open access

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Abstract

The content delivery market has mainly been dominated by large Content Delivery Networks (CDNs) such as Akamai and Limelight. However, CDN traffic exerts a lot of pressure on Internet Service Provider (ISP) networks. Recently, ISPs have begun deploying so-called Telco CDNs, which have many advantages, such as reduced ISP network bandwidth utilization and improved Quality of Service (QoS) by bringing content closer to the end-user. Virtualization of storage and networking resources can enable the ISP to simultaneously lease its Telco CDN infrastructure to multiple third parties, opening up new business models and revenue streams. In this paper, we propose a proactive cache management system for ISP-operated multitenant Telco CDNs. The associated algorithm optimizes content placement and server selection across tenants and users, based on predicted content popularity and the geographical distribution of requests. Based on a Video-on-Demand (VoD) request trace of a leading European telecom operator, the presented algorithm is shown to reduce bandwidth usage by 17% compared to the traditional Least Recently Used (LRU) caching strategy, both inside the network and on the ingress links, while at the same time offering enhanced load balancing capabilities. Increasing the prediction accuracy is shown to have the potential to further improve bandwidth efficiency by up to 79%.

Type: Proceedings paper
Title: Proactive Multi-tenant Cache Management for Virtualized ISP Networks
Event: CNSM 2014: 10th International Conference on Network and Service Management (CNSM): 17-21 November 2014, Rio de Janeiro, Brazil
Location: Rio De Janeiro, BRAZIL
Dates: 17 November 2014 - 21 November 2014
ISBN-13: 9783901882678
Open access status: An open access version is available from UCL Discovery
DOI: 10.1109/CNSM.2014.7014144
Publisher version: https://doi.org/10.1109/CNSM.2014.7014144
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: Servers, Bandwidth, Accuracy, History, Prediction algorithms, Conferences, Routing
UCL classification: UCL > Provost and Vice Provost Offices
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: http://discovery.ucl.ac.uk/id/eprint/1502960
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