A Two-level distributed architecture for the support of content adaptation and delivery services

  • Authors:

  • Claudia Canali;Michele Colajanni;Riccardo Lancellotti

  • Affiliations:

  • Department of Information Engineering, University of Modena and Reggio Emilia, Modena and Reggio Emilia, Italy;Department of Information Engineering, University of Modena and Reggio Emilia, Modena and Reggio Emilia, Italy;Department of Information Engineering, University of Modena and Reggio Emilia, Modena and Reggio Emilia, Italy

  • Venue:
  • Cluster Computing
  • Year:
  • 2010

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Abstract

The growing demand for Web and multimedia content accessed through heterogeneous devices requires the providers to tailor resources to the device capabilities on-the-fly. Providing services for content adaptation and delivery opens two novel challenges to the present and future content provider architectures: content adaptation services are computationally expensive; the global storage requirements increase because multiple versions of the same resource may be generated for different client devices. We propose a novel two-level distributed architecture for the support of efficient content adaptation and delivery services. The nodes of the architecture are organized in two levels: thin edge nodes on the first level act as simple request gateways towards the nodes of the second level; fat interior clusters perform all the other tasks, such as content adaptation, caching and fetching. Several experimental results show that the Two-level architecture achieves better performance and scalability than that of existing flat or no cooperative architectures.