P2P網絡模型下搜索機制的研究與實現(xiàn).pdf

1、學抖n糞：三堂丹糞9—衛(wèi)!!!一m位代日—j蝗!!一密罐：一專J名啷諺z碧碩士學位論文論文題目：墾!塑塹塑型工塑量墊型笪塹壅量塞堡學生姓名學號指導教師學科專業(yè)研究方向論文提交日期張維風張代遠副教授計算機應用技術計算機在通信中的應用二00七年三月南京郵電大學碩士研究生學位論文AbstractAbstractThetechnologyofPeertoPeer(P2P)networkisakindoftechnologyabouttheove

2、rlaynetworkswhichisconstructedonthebasisoftheIntemetnowanditsoriginalpurposeisfilesharingAtpresent，P2PhasbeenwidelyusedintheareaofDistributedcomputing，Collaboration，Resourcesearching&sharingandSOon，moreandmorepeoplebegin

3、topayattentiontoitAsthebasisofallkindsofP2Papplication，thetechnologyofP2Presourcesearchinghasbecomingaresearchhotspotnowbuttherealsoubiquitymanyproblemssuchas：ignorethestate：ofboRomnetworks；lackofconsiderationaboutthepee

4、rs’heterogeneity；unbalancedloadofresourceproviders；greatcostinmaintainingstatusinformationaboutnetworksetc，allaboveinfluencethequalityandefficiencyofresourcesearchinginsomedegreeThemaincontributionofthethesisis：domuchres

5、earchinresourcesearchingmechanismonP2Pnetwork，designandimplementaresourcesearchingmodelnameddualCAP(ChordAndPastryCAP)whichisbasedontheideaofDistributedHashTableThedualCAPmodelfullyconsiderestheboRomnetworksandalsothebad

6、influencebroughtbythepeers’heterogeneitySOitdelaminatenetworkandclassifiespeersaccordingtogeographicdistrict，peers’performanceandpeers’behavionIndualCAPmodel，peersthatbelongtodifferentnetworklayermaintaindifferentrouting

7、tableandtakedifferentroutingstrategyManystablepeersarepickedouttostoresharingresourcecooperativelyandallinformationaboutthestablepeerswhichstorethesamesharingresourceisrecordedinsomecrosslinklistsinordertobalancetheresou

8、rceprovider’Sload。Atlast，amathematicalmodelisbuilttodemonstratethedualCAPresourcesearchingmechanismisbetterthanChordandPastryinrespectofsearchingefficiencybalancingload，robustnessandexpansibilityKeywords：P2Presourcesearc