A scalable framework for content replication in multicast-based content distribution networks

Authors:
Yannis Matalas;Nikolaos D. Dragios;George T. Karetsos
Affiliations:
Digital Media & Internet Technologies Department, Intracom Telecom, Athens, Greece;School of Electrical and Computer Engineering, National Technical University of Athens, Greece;School of Electrical and Computer Engineering, National Technical University of Athens, Greece
Venue:
MMNS'06 Proceedings of the 9th IFIP/IEEE international conference on Management of Multimedia and Mobile Networks and Services
Year:
2006

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Abstract

This paper proposes a framework for replicating content in multicast- based CDNs. We focus on the design of a scalable and robust system that provides local availability and redundancy of content. The system takes on-line and distributed replication decisions on a per-object basis. The scalability and local redundancy is achieved by partitioning the overlay of surrogate servers into fully meshed groups. The proposed framework can incorporate any set of local metrics and constraints for deciding the placement of replicas, thus allowing the CDN designer to tune it to his specific deployment characteristics.