Comparison of Centralized and Decentralized Service Discovery in a Grid Environment

S.A. Ludwig (UK)


Service Discovery, Service Registry, Performance Measurements, Reliability Analysis.


In this paper three different Service Discovery approaches based on centralized and distributed registries within so called Virtual Organizations are assessed. The first approach is a centralized model, the second a completely decentralized and the third is a hybrid of both models. The Grid environment is typically comprised of heterogeneous resources over wide-area networks. It addresses all distributed computing issues, especially the problem of service discovery. The benefits and drawbacks of all three models are discussed and a comparison regarding issues such as administration, management, scalability and security is followed. Furthermore, measurements are executed in order to investigate the performance of all three models, and a reliability analysis is conducted.

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