p2p网络chord资源定位算法改进

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1、华中科技大学硕士学位论文AbstractDuetothesinglepointoffailure,performancebottlenecksandotherproblems,thetraditionalC/S(Client/Server)modalhasbeenunabletosatisfythedemandofnetworkresourcerapidsharingforpeople.P2P(Peer-to-Peer)networkmodelgetsridfromtheserver’scontr

2、oltothewholesystem,makesfulluseofthefreeresourcesofthelargenumberofclients,andeffectivelyresolvestheproblemofC/Snetworkmodel.ThesearchandlocationofsharingresourceinP2Pnetworkhasbeenthefocusofcurrentresearch.Chordprotocolistheclassicresourcesearchandlo

3、cationalgorithminstructuredP2Pnetwork,butithasthefollowingdefects:(1)AstheintervalofFingerTablestructureformulagrowsbytheexponentialoftwo,itgrowsslowlyatfirst,buttherealnodesintheChordnetworkissparse，sothebeforepartofFingerTableredundancyismuch.(2)Cho

4、rdonlysearchesresourcefromtheclockdirection,andtheFingerTableonlycovershalfinformationoftheChordringmostly.Ifthedistanceoftargetandcurrentnodeexceedshalfring,theroutinghopsaremany.ResponsetotheproblemsoftheclassicChordprotocol,amodifyresolutionwithred

5、ucingtheredundantinformationoftheoriginalFingerTableandaddingareverseFingerTabe.Itselectsaproperdirectiontoselectivityroutingautomaticallyafterjudgingthedistancebetweenthetargetandcurrentnode.Thesimulationresultsshowthat,comparingwiththeclassicChordal

6、gorithm,themodifyresolutionhasimprovedinaspectofresourcesearchandlocation.Keywords:P2P,Chord,SelectivityRouting,ReducingRedundancyII华中科技大学硕士学位论文目录摘要.......................................................................................................

7、....IAbstract...........................................................................................................II1绪论1.1论文背景及意义.....................................................................................(1)1.2国内外研究现状..................

8、...................................................................(2)1.3本文的主要工作.....................................................................................(3)1.4论文的组织结构.................................................................