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Summary: P-Grid: A Self-organizing Structured P2P System
Karl Aberer, Philippe Cudré-Mauroux, Anwitaman Datta, Zoran Despotovic,
Manfred Hauswirth, Magdalena Punceva, Roman Schmidt
Distributed Information Systems Laboratory
École Polytechnique Fédérale de Lausanne (EPFL)
Contact: karl.aberer@epfl.ch
1 Self-organizing Structured P2P Sys-
tems1
In the P2P community a fundamental distinction
is made among unstructured and structured P2P
systems for resource location. In unstructured
P2P systems in principle peers are unaware of
the resources that neighboring peers in the over-
lay networks maintain. Typically they resolve
search requests by flooding techniques. Gnutella
[9] is the most prominent example of this class.
In contrast, in structured P2P systems peers
maintain information about what resources
neighboring peers offer. Thus queries can be
directed and in consequence substantially fewer
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