This paper describes an interactive graphical user interface (GUI) that can be used for the modeling and analysis of Web proxy workloads. The WebTraff GUI has three main components. First, the WebTraff tool provides a visual front-end to ProWGen, a Web proxy workload generation tool developed in prior work, which can be used for generating synthetic Web proxy workloads of arbitrary length, with userspecified statistical properties. Second, the WebTraff GUI provides tools for the analysis of Web proxy workload characteristics, including document size distribution, document popularity profile, and temporal locality properties. Third, the GUI provides a front-end to a simple Web proxy cache simulation program, which can be used in studies of Web proxy cache performance and cache filter effects.
"Web 2.0" and "cloud computing" are revolutionizing the way IT infrastructure is accessed and managed. Web 2.0 technologies such as blogs, wikis and social networking platforms provide Internet users with easier mechanisms to produce Web content and to interact with each other. Cloud computing technologies are aimed at running applications as services over the Internet on a scalable infrastructure. They enable businesses that do not have the capital or technical expertise to support their own infrastructure to get access to computing on demand. They could also be used by large businesses to more efficiently manage their own infrastructure as an "internal cloud".In this paper we explore the advantages of using Web 2.0 and cloud computing technologies in an enterprise setting to provide employees with a comprehensive and transparent environment for utilizing applications. To demonstrate the effectiveness of this approach we have developed an environment that uses Facebook (a social networking platform) to provide access to the Fire Dynamics Simulator (a legacy application). The application is supported using Virtual Appliances that are hosted in an internal cloud computing infrastructure that adapts dynamically to user demands. Initial feedback suggests this approach provides a much better user experience than the traditional standalone use of the application. It also simplifies the management and increases the effective utilization of the underlying IT resources.
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