Cache as a service: Leveraging sdn to efficiently and transparently support video-on-demand on the last mile

Georgopoulos, Panagiotis; Broadbent, Matthew; Plattner, Bernhard; Race, Nicholas

Abstract

High quality online video streaming, both live and on-demand, has become an essential part of consumers' every-day lives. The popularity of video streaming has placed a heavy burden on the network infrastructure that now has to transfer an enormous amount of data very quickly to the end-user. To further exacerbate the situation, the Video-on-Demand (VoD) distribution paradigm uses a unicast independent flow for each user request. This results in multiple duplicate flows carrying the same video assets many times end-to-end. We present OpenCache: a highly configurable, efficient and transparent in-network caching service that aims to improve the VoD distribution efficiency by caching video assets as close to the end-user as possible. OpenCache leverages Software Defined Networking to benefit last mile environments by improving network utilisation and increasing the Quality of Experience for the end-user. Our evaluation on a pan-European OpenFlow testbed uses adaptive video streaming and demonstrates that with the use of OpenCache, the external link utilisation is reduced by 100%. Furthermore the streaming application receives better quality video and observes higher throughput, lower latency and shorter start up and buffering times.

Citation

Georgopoulos, P., Broadbent, M., Plattner, B., & Race, N. (2014). Cache as a service: Leveraging sdn to efficiently and transparently support video-on-demand on the last mile. In 2014 23rd International Conference on Computer Communication and Networks (ICCCN). https://doi.org/10.1109/ICCCN.2014.6911775

• Conference Name: 2014 23rd International Conference on Computer Communication and Networks (ICCCN)
• Conference Location: Shanghai, China
• Start Date: Aug 4, 2014
• End Date: Aug 7, 2014
• Online Publication Date: Sep 29, 2014
• Publication Date: 2014
• Deposit Date: Mar 10, 2022
• Publisher: Institute of Electrical and Electronics Engineers
• Series ISSN: 1095-2055
• Book Title: 2014 23rd International Conference on Computer Communication and Networks (ICCCN)
• DOI: https://doi.org/10.1109/ICCCN.2014.6911775
• Public URL: http://researchrepository.napier.ac.uk/Output/2843986