A model validation study of hierarchical and distributed web caching model

Authors:
Rachid El Abdouni Khayari;Adisa Musovic;Axel Lehmann;Michael Böhm
Affiliations:
Universität der Bundeswehr München, Neubiberg, Deutschland;Universität der Bundeswehr München, Neubiberg, Deutschland;Universität der Bundeswehr München, Neubiberg, Deutschland;Universität der Bundeswehr München, Neubiberg, Deutschland
Venue:
SpringSim '10 Proceedings of the 2010 Spring Simulation Multiconference
Year:
2010

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Abstract

Caching is one of the most used technique to reduce the Internet bandwidth consumption leading to an improvement of the end-to-end delays. Due to the limited capacity of single caches (memory and bandwidth) multiple caches are combined to build a cache network serving a large number of users in a highly efficient cache federation. Three different possibilities for the composition of caches in a cache federation are possible: hierarchical, distributed and hybrid. In this paper we will introduce and discuss the well-known model of Rodriguez et al. and validate it using real measurements data. Furthermore, we will discuss some improvement issues of this model.