Global Adaptive Request Distribution with Broker

  • Authors:

  • Leszek Borzemski;Anna Zatwarnicka;Krzysztof Zatwarnicki

  • Affiliations:

  • Institute of Information Science and Engineering, Wroclaw University of Technology, Wroclaw, Poland;Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, Opole, Poland;Faculty of Electrical Engineering, Automatic Control and Computer Science, Opole University of Technology, Opole, Poland

  • Venue:
  • KES '07 Knowledge-Based Intelligent Information and Engineering Systems and the XVII Italian Workshop on Neural Networks on Proceedings of the 11th International Conference
  • Year:
  • 2007

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Abstract

This paper presents the application of fuzzy logic and neural networks to HTTP request dispatching performed within a geographically distributed Web system. Web sites serve as a global content delivery system where each Web server can respond to the client request. We propose broker-based system architecture with a global request dispatching algorithm called GARDiB. The algorithm uses the fuzzy-neural decision-making mechanism to assign each incoming request to the server with the least expected response time. The response time include the transmission time over the network, both for the request and for the response, as well as the time elapsed on the server responding to the request. We demonstrate through the simulations that our algorithm is more effective than popular global dispatching policies Round-Robin and Weighted Round-Robin.