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| Diploma Thesis | PreJuSER-61963 |
2008
Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag
Jülich
Please use a persistent id in citations: http://hdl.handle.net/2128/3124
Report No.: Juel-4263
Abstract: An information system is an essential part of every Grid system since it provides information about the entities (services, resources, user, etc.) a Grid consists of. The information provided by such a system may serve a variety of needs. It can for example be used for brokering purposes, to schedule workflows, to orchestrate services, or to predict the performance of a Grid. Such use cases very much determine the information model and the design of the information service. In this thesis, I present an open standard, platform-agnostic, and web services based information service. Since a Grid information service consolidates disseminated information of diversified Grid entities, the modeling of this information has a large impact on the Grid information service while executing its business functions. In this thesis, I formalize a resource schema which models an elementary concepts required to represent significant Grid entities. The question of reliability and fault tolerance is often not properly answered when it comes to the realization of distributed systems, although the deployment of any system in a distributed environment shows that those factors are of utmost importance. As the Grid information service developed during the diploma theses will be deployed in a highly-distributed Grid, and is one of the essential services for the Grid to operate properly, it is expected to satisfy certain reliability criteria. In this thesis, I present a reliability aspect of Grid information service through a multi-tier replication infrastructure by focusing on its architectural and implementation details.
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