An Analytical Comparison of Distributed and Hierarchical Web-Caching Architectures
نویسندگان
چکیده
In this paper, we compared the mean response time of distributed and hierarchical Web-caching architectures by utilizing an analytical model. The analytical model uses simplifying assumptions for distributed and hierarchical caching systems such that they can be defined using a birth-death model. The analytical results show that the mean response time in the distributed caching system tends to be less than that of the hierarchical caching system when the arrival rate of the two caching systems is equal as well as the hit-rate of the individual caches. The analytical comparison is done for an initial condition with one client and the limiting situations where the number of clients gets large. We then use simulation to validate our conclusions in the general case.
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