Analysis of design alternatives for reverse proxy cache providers

11th IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer Telecommunications Systems, 2003. MASCOTS 2003. Pub Date : 2003-10-27 DOI:10.1109/MASCOT.2003.1240676

B. Ciciani, F. Quaglia, P. Romano, D. Dias

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引用次数: 6

Abstract

Reverse proxy caches are used to provide scalability and improved latency to popular sites on the Web. In this paper we provide analytical performance models for distributed reverse proxy cache architectures, and study the trade-offs between various design alternatives. Specifically, we consider static and dynamic assignment of proxy cache nodes to Web sites, with different levels of sharing of proxy caches among Web sites. Innovative modeling contributions have been introduced to handle real design constraints, such as bounded cache size and bounded processing power, and different characteristics related to the hosted objects, including reference rates, popularity distributions and update rates. In the analysis we have modeled both system steady state as well as transient interaction between proxy sites and Web sites. We have found different trade-offs between various design alternatives depending on characteristics of the Web site workloads.

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分析反向代理缓存提供程序的设计备选方案

反向代理缓存用于为Web上流行的站点提供可伸缩性和改进的延迟。本文提供了分布式反向代理缓存架构的分析性能模型，并研究了各种设计方案之间的权衡。具体来说，我们考虑了代理缓存节点到Web站点的静态和动态分配，以及Web站点之间代理缓存的不同共享级别。引入了创新的建模贡献来处理实际的设计约束，例如有限的缓存大小和有限的处理能力，以及与托管对象相关的不同特征，包括参考率、流行度分布和更新率。在分析中，我们对系统稳定状态以及代理站点和Web站点之间的瞬态交互进行了建模。根据网站工作负载的特点，我们发现了不同设计方案之间的不同权衡。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

11th IEEE/ACM International Symposium on Modeling, Analysis and Simulation of Computer Telecommunications Systems, 2003. MASCOTS 2003.

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