Content-Based Routing in Networks with Time-Fluctuating Request Rates

  • Authors:
  • Folkert Vliet;Richard J. Boucherie;Maurits Graaf

  • Affiliations:
  • University of Twente,;University of Twente,;Division Land and Joint Systems, Thales Nederland B.V., Netherlands

  • Venue:
  • NET-COOP '09 Proceedings of the 3rd Euro-NF Conference on Network Control and Optimization
  • Year:
  • 2009

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Abstract

In large-scale distributed applications, a loosely-coupled event-based style of communication as in publish-subscribe systems eases the integration of autonomous, heterogeneous components. In a publish-subscribe system, content-based routing - where routing is based on the content of the messages - is an alternative to address-based delivery. In this paper we provide a time-dependent analysis of the identity-based routing scheme. Our analytical approach is based on continuous-time Markov chains and extends the steady-state approach by Jaeger and Mühl [7] to systems with time-fluctuating parameters. For m -ary trees with k levels, with a single publisher at the root and subscribers at the leaves, we obtain explicit closed form solutions for the time-dependent distribution of the traffic rates in the network. The results allow us to investigate, for example, the impact of time-fluctuating request rates versus time-independent request rates, and the switching point between optimality of flooding and identity-based routing.