Evaluating Unstructured PeertoPeer Lookup Overlays

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Provided by: Association for Computing Machinery
Topic: Collaboration
Format: PDF
Unstructured peer-to-peer lookup systems incur small constant overhead per single join or leave operation, and can easily support keyword searches. Hence, they are suitable for dynamic failure-prone environments. In this paper, the authors define metrics for evaluating unstructured overlays for peer-to-peer lookup systems. These metrics capture the search dependability and efficiency, and the granularity at which one can control the tradeoff between the two, as well as fairness. According to these metrics, they evaluate different graphs and overlays, including a Gnutella graph, a power law random graph, normal random graphs, a 3-regular random graph, and a 3-Araneola overlay.
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