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P2P Networks are highly dynamic structures since their nodes - peer users keep joining and leaving continuously. In the paper, we study the effects of network change rates on query routing efficiency. First the authors describe some background and an abstract system model. The chosen routing technique makes use of cached metadata from previous answer messages and also employs a mechanism for broken path detection and metadata maintenance. Several metrics are used to show that the protocol behaves quite well even with high rate of node departures, but above a certain threshold it literally breaks down and exhibits considerable efficiency degradation.
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