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Citation
Yee Jiun Song, Venugopalan Ramasubramanian and Emin Gun Sirer. "Optimal Resource Utilization in Content Distribution Networks". Technical report, Cornell University, TR2005-2004, November, 2005.

Abstract
This paper examines replication in content distribution networks and proposes a novel mechanism for optimally resolving performance versus cost tradeoffs. The key insight behind our work is to formally and analytically capture the relationship between performance, bandwidth overhead and storage requirements for a web cache, express the system goals as a mathematical optimization problem, and solve for the optimal extent of replication that achieves the desired system goals with minimal overhead. We describe the design and implementation of a new content distribution network based on this concept, called CobWeb. CobWeb can achieve a target lookup latency while minimizing network and storage overhead, minimize access time while keeping bandwidth usage below a set limit, and alleviate “flash crowd” effects by rapidly replicating popular objects through fast and highly adaptive replica management. We outline the architecture of the CobWeb system, describe its novel optimization algorithm for intelligent resource allocation, and compare, through simulations and a physical deployment on PlanetLab, CobWeb’s informed, analysis-driven replication strategy to existing approaches based on passive caching and heuristics.

Electronic downloads

• cobweb.pdf · application/pdf · 268 kbytes

• HTML

  Yee Jiun Song, Venugopalan Ramasubramanian and Emin Gun
  Sirer. <a
  href="http://www.truststc.org/pubs/41.html"
  ><i>Optimal Resource Utilization in Content
  Distribution Networks</i></a>, Technical report,
   Cornell University, TR2005-2004, November, 2005.

• Plain text

  Yee Jiun Song, Venugopalan Ramasubramanian and Emin Gun
  Sirer. "Optimal Resource Utilization in Content
  Distribution Networks". Technical report,  Cornell
  University, TR2005-2004, November, 2005.

• BibTeX

  @techreport{SongRamasubramanianSirer05_OptimalResourceUtilizationInContentDistributionNetworks,
      author = {Yee Jiun Song, Venugopalan Ramasubramanian and
                Emin Gun Sirer},
      title = {Optimal Resource Utilization in Content
                Distribution Networks},
      institution = {Cornell University},
      number = {TR2005-2004},
      month = {November},
      year = {2005},
      abstract = {This paper examines replication in content
                distribution networks and proposes a novel
                mechanism for optimally resolving performance
                versus cost tradeoffs. The key insight behind our
                work is to formally and analytically capture the
                relationship between performance, bandwidth
                overhead and storage requirements for a web cache,
                express the system goals as a mathematical
                optimization problem, and solve for the optimal
                extent of replication that achieves the desired
                system goals with minimal overhead. We describe
                the design and implementation of a new content
                distribution network based on this concept, called
                CobWeb. CobWeb can achieve a target lookup latency
                while minimizing network and storage overhead,
                minimize access time while keeping bandwidth usage
                below a set limit, and alleviate “flash crowd”
                effects by rapidly replicating popular objects
                through fast and highly adaptive replica
                management. We outline the architecture of the
                CobWeb system, describe its novel optimization
                algorithm for intelligent resource allocation, and
                compare, through simulations and a physical
                deployment on PlanetLab, CobWeb’s informed,
                analysis-driven replication strategy to existing
                approaches based on passive caching and heuristics.},
      URL = {http://www.truststc.org/pubs/41.html}
  }
  

Posted by Bill Hogan on 4 Apr 2006.
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