| Amos Fiat (2008) | |||||||||||||
Abstract | |||||||||||||
| tralizedarchitecturesseemtosupportatmostone:pre partial-matchqueries,butsincesearchisunrelatedtothe vailingprotocols(suchasGnutellaandFastTrack)support isGnutella[14]underwhichitemsareonlyindexedbythe tured,wheresearchisrouted.PrevailingdecentralizedP2Ppeerthatcachethem;searchcanberesolvedonlybyprob- architecturesareunstructured.Oneofthesearchitectures query,theyhavelimitedscope.DistributedHashTables (suchasCANandCHORD)constituteanotherclassofP2P typicallycoverabout1000nodes).TherecentwaveofFast- ingthesepeers;andpeersareprobedusingooding(that architecturespromotedbytheresearchcommunity.DHTs coupleindexlocationwiththeitem'shashvalueandare abletoprovidescopebutcannoteectivelysupportpartialmatchqueries;anotherhurdleinDHTdeploymentistheir tightcontroltheoverlaystructureanddataplacementwhich ingsomepeersassearch-hubssupernodesthatcachethetoresumeafterfailure);andimprovedsearch(bydesignat- Track[33]-basedP2Parchitectures(Morpheus,Kazaa[20, cientdownloads(simultaneousfromseveralpeersandability gnutellaorFastTrack),andthedesignretainsmanyoftheir turedP2Pnetworks(basedonpopulararchitecturessuchasarchitectures.Theyaredesignedasacollectionofunstruc- makesthemmoresensitivetofailures. indexofothers). 19])incorporateimproveddesignthatallowsformoree-appealingpropertiesincludingsupportforpartialmatch AssociativeoverlaysareanewclassofdecentralizedP2P successofthesedecentralizedunstructuredarchitecturesis typicallyhavemeta-attributesdescribingtheirtypeandprop- supportforversatile(partial-match)queries:Shareditems Afeaturethatundoubtedlycontributestothebeaming | |||||||||||||
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