S. Buchholz, S. Jaensch, and A. Schill (Germany)
WWW, Proxy trace analysis, Traffic modeling, Primary and secondary objects, Cache ability, Temporal locality
Simulation is a proven tool for evaluating and optimizing technologies for improving the information access in the web, e.g. web caching. However, using simulation for designing and evaluating such technologies for new application domains suffers from insufficient empirical information about the traffic patterns in these scenarios. Nevertheless, the knowledge about the traffic patterns in existing domains augmented by assumptions about the differences between an existing and the new application often allows some prediction about the traffic patterns in new domains. Simulation based on those predictions demands a flexible traffic model that can be parameterized to reflect the specifics predicted for the target application scenario. We present a detailed and flexible traffic model that meets this requirement. Unlike previous work, we distinguish between the characteristics of primary and secondary objects. In addition, we take both cacheable and uncacheable objects into account. Our novel temporal locality model allows modeling of temporal correlation in request streams orthogonally to the document popularity.
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