Flow-Based Model for Joint Routing and Request Routing in Hybrid Content Delivery Networks
Journal Title: Scholars Journal of Engineering and Technology - Year 2014, Vol 2, Issue 5
Abstract
Growing number of users, increasing popularity of large-scale multimedia content and high requirements for quality of delivery the content lead to integration of Content Delivery Networks (CDN) and Peer-to-Peer (P2P) networks in whole hybrid (HCDN) architecture. Hybrid content delivery networks allow to combine low cost of services with high their quality, but at same time they toughen up requirements to management practices, including request routing. In order to maximize the productivity of content delivery system in whole, to provide guaranteed quality of service and to use resources in effective way a management of requests in HCDN should be based on a rigorous mathematical justification. In this paper we proposed a flow mathematical model that implies (a) downloading from several CDN-servers at same time that allows to use computing and network resources in a balanced manner and to improve the result quality of service, (b) solving of request routing on HCDN and traffic routing in transport telecommunication network jointly. A distinctive feature of the proposed approach is taking into account state of the underlying transport infrastructure to select CDN-servers. Numerical results show that proposed model provides multipath routing without differential delay and allow reducing downloading delay. Keywords: content delivery network; hybrid content delivery network; flow model; quality of service; request routing; load balancing
Authors and Affiliations
Yevsyeyeva O, Khader Mohammed B
Keywords
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