Web 2.0, RIA, AJAX and SOA are terms and abbreviations we hear and use on a daily basis. But do we know what they mean for us as professional performance testers? This document provides an overview of the relevant Web2.0 terms and elaborates on how to run performance tests on these applications. The document targets the performance testing professional as well as the R&D manager looking for information on how to prepare for this new era.
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An important argument for the introduction of software managed clusters is that of scale: By constructing the cluster out of commodity compute elements, one can, by simply adding new elements, improve the reliability of the overall system in terms of performance and in availability. The limits to how far such a cluster can be scaled seems to be dependent on the scalability of its management software, which in its core has a collection of distributed algorithms to guarantee the correct operation of the cluster. The complexity of these algorithms makes them a vulnerable component of the system in terms of their impact on the overall scalability of the system.
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Performance, availability, and scalability concerns often take a back seat to application functionality until the end of a development project. However, in Improving .NET Application Performance and Scalability, the authors warn: “Many, if not most, performance problems are introduced by specific architecture, design, and technology choices that you make very early in the development cycle, often in the design stage.” The strategies they recommend for building performance into an application stress the importance of choosing a scalable solution for persistent data access.
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Everything You Wanted to Know about Globus, but Were Afraid To Ask Describing Globus Toolkit Version 4 An Early and Incomplete Draft Please send comments, criticisms, and suggestions to: foster@mcs.anl.gov Preface The Globus Toolkit (GT) has been developed since the late 1990s to support the development of service-oriented distributed computing applications and infrastructures. Core GT components address basic issues relating to security, resource access and management, data movement and management, resource discovery, and so forth. A broader “Globus universe” comprises numerous tools and components that build on core GT4 functionality to provide many useful application- level functions.
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