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Advances in Databases and Information Systems

Volume 4152 of the series Lecture Notes in Computer Science pp 200-215

Integrating Caching Techniques on a Content Distribution Network

  • Konstantinos StamosAffiliated withDepartment of Informatics, Aristotle University of Thessaloniki
  • , George PallisAffiliated withDepartment of Informatics, Aristotle University of Thessaloniki
  • , Athena VakaliAffiliated withDepartment of Informatics, Aristotle University of Thessaloniki

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Abstract

Web caching and replication tune capacity with performance and they have become essential components of the Web. In practice, caching and replication techniques have been applied in proxy servers and Content Distribution Networks (CDNs) respectively. In this paper, we investigate the benefits of integrating caching policies on a CDN’ s infrastructure. Using a simulation testbed, our results indicate that there is much room for performance improvement in terms of perceived latency, hit ratio and byte hit ratio. Moreover, we show that the combination of caching with replication fortifies CDNs against flash crowd events.