Design of Dominating Set based Semantic Overlay Network for Efficient Content Distribution (original) (raw)

Abstract

Content Distribution Networks (CDNs) are overlay networks for placing the content near end clients with the aim at reducing delay, network congestion and balancing the workload, hence improving the service quality perceived by the end clients. The three major research issues in CDN are selection of surrogate server for replicating and retrieving the content, policies for replicating and retrieving the content, and caching. Among these research areas, once the surrogate server is selected for replication, any replication policy can replicate the content in optimal replication time. The main objective of this work is to construct a semantic overlay network of surrogate servers based on dominating set theory. This yields any replication algorithm that can replicate the contents to minimum number of surrogate servers within the SON. Such servers can access from anywhere. Then we propose a content distribution algorithm named Optimal Fast Replica (O-FR) and apply our proposed algorithm t...

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