Optimizing Cost for Online Social Networks on Geo-Distributed Clouds

Abstract—Geo-distributed clouds provide an intriguing platform to deploy online social network (OSN) services. To leverage the potential of clouds, a major concern of OSN providers is optimizing the monetary cost spent in using cloud resources while considering other important requirements, including providing satisfactory quality of service (QoS) and data availability to OSN users. In this paper, we study the problem of cost optimization for the dynamic OSN on multiple geo-distributed clouds over consecutive time periods while meeting pre-defined QoS and data availability requirements. We model the cost, the QoS, as well as the data availability of the OSN, formulate the problem, and design an algorithm named cosplay. We carry out extensive experiments with a large-scale real-world Twitter trace over 10 geo-distributed clouds all across the US. Our results show that, while always ensuring the QoS and the data availability as required, cosplay can reduce much more one-time cost than...

• Type: Journal
• Year: 2016
• Where: TON
• Authors: Lei Jiao, Jun Li, Tianyin Xu, Wei Du, Xiaoming Fu
• Keywords: TON 2016