DistributedSystems(3rd)英文无水印原版pdf第3版pdf所有页面使用FoxitReader、PDF-XChangeViewer、SumatraPDF和Firefox测试都可以打开本资源转载自网络，如有侵权，请联系上传者或csdn删除查看此书详细信息请在美国亚马逊官网搜索此书Copyright@2017MaartenvanSteenandAndrewS.TanenbaumPublishedbyMaartenvanSteenThisbookwaspreviouslypublishedby:PearsonEducation,IncISBN:978-15-430573-8-6(printedversion)ISBN:978-90-815406-2-9(digitalversion)Edition:3.Version:01(February2017)AllrightstotextandillustrationsarereservedbyMaartenvanSteenandAndrewS.Tanenbaum.Thisworkmaynotbecopied,reproduced,ortranslatedinwholeorpartwithoutwrittenpermissionofthepublisher,exceptforbriefexcerptsinreviewsorscholanyformofinformationstorageadaptationorwhatever,computersoftware,orbysimilarordissimilarmethodsnowknownordevelopedinthefutureisstrictlyforbiddenwithoutwrittenpermissionofthepublisherToMarielle,max,andelkeMVSToSuzanneBarbara,Marvin,Aronnathan,olivia,andmirteASTCONTENTSPreface1Introduction1.1Whatisadistributedsystem?Characteristic1:Collectionofautonomouscomputingelements2Characteristic2:SinglecoherentsystemMiddlewareanddistributedsystems1.2DesigngoalsSupportingresourcesharingMakingdistributiontransparent12Beingscalable15Pitfalls243Typesofdistributedsystems24Highperformancedistributedcomputing25Distributedinformationsystems34Pervasivesystems1.4Summary522Architectures552.1Architecturalstyles56Layeredarchitectures.57Object-basedandservice-orientedarchitectures62Resource-basedarchitectures64Publish-subscribearchitectures2.2MiddlewareorganizationWrappersInterceptors垂番Modifiablemiddleware752.3SystemarchitectureCONTENTSCentralizedorganizations76Decentralizedorganizations:peer-to-peersystemsHybridarchitectures2.4Examplearchitectures94TheNetworkFilesystem94TheWeb982.5Summary3Processes1033.1Threads..104Introductiontothreads104Threadsindistributedsystems1113.2Virtualization116Principleofvirtualizationapplicationofvirtualmachinestodistributedsystems,1223.3Clients124Networkeduserinterfaces124Client-sidesoftwarefordistributiontransparency1273.4Servers128Generaldesignissues129Objectservers133Example:TheApacheWebserver139Serverclusters,,,,,,,1413.5Codemigration152Reasonsformigratingcode152Migrationinheterogeneoussystems1583.6Summary1614Communication4.1Foundations164LayeredProtocols164TypesofCommunication.1724.2Remoteprocedurecall..173Basicrpcoperation174Parameterpassing178RPC-basedapplicationsupport182VariationsonrPc185Example:dCErPc,.1884.3Message-orientedcommunication193Simpletransientmessagingwithsockets.193Advancedtransientmessaging198Message-orientedpersistentcommunication206Example:IBM'sWebSpheremessage-queuingsystem212Example:AdvancedMessageQueuingProtocol(AMQP)....218DS3.01DOWNLOADEDBYTEWIGOMIXMAIL.INFOCONTENTS4.4Multicastcommunication221Application-leveltree-basedmulticasting221Flooding-basedmulticasting225Gossip-baseddatadissemination2294.5Summary2345Naming2375.1Names,identifiersandaddresses2385.2Flatnaming.241Simplesolutions241Home-basedapproaches245Distributedhashtables246Hierarchicalapproaches2515.3Structurednaming256Namespaces.256Nameresolution259Theimplementationofanamespace264Example:TheDomainNameSystem271Example:TheNetworkFileSystem2785.4Attribute-basednaming283Directoryservices283Hierarchicalimplementations:LDAP285Decentralizedimplementations2885.5Summary2946Coordination2976.1Clocksynchronization.298Physicalclocks299Clocksynchronizationalgorithms3026.2Logicalclocks310Lamport'slogicalclocks310Vectorclocks3166.3Mutualexclusion321322acentralizedalgorithm.322adistributedalgorithm323atoken-ringalgorithm.325adecentralizedalgorithm3266.4Electionalgorithms329Thebullyalgorithm.,..330Aringalgorithm332Electionsinwirelessenvironments333Electionsinlarge-scalesystems.3356.5Locationsystems336DOWNLOADEDBYTEWIGOMIXMAIL.INFODS301VIllCONTENTSGPS:GlobalPositioningSystem337WhengPsisnotanoption339Logicalpositioningofnodes3396.6Distributedeventmatching..343Centralizedimplementations3436.7Gossip-basedcoordination349asgregation349Apeer-samplingservice350Gossip-basedoverlayconstruction3526.8Summary3537Consistencyandreplication3557.1Introduction356Reasonsforreplication356Replicationasscalingtechnique3577.2Data-centricconsistencymodels358Continuousconsistency359Consistentorderingofoperations364Eventualconsistency3737.3Client-centricconsistencymodels375MonotonicreadsMonotonicwrites.379Readyourwrite380Writesfollowreads3827.4ReplicamanagementFindingthebestserverlocation383Contentreplicationandplacement..385Contentdistribution..388Managingreplicatedobjects3937.5Consistencyprotocols.396Continuousconsistency..........396Primary-basedprotocols398Replicated-writeprotocolsCache-coherence403Implementingclient-centricconsistency,,...4077.6Example:CachingandreplicationintheWeb4097.7Summar4208Faulttoleran4238.1Introductiontofaulttolerance424Basicconcepts.424Failuodels427Failuremaskingbyredundancy8.2Processresilience432DS3.01DOWNLOADEDBYTEWIGOMIXMAIL.INFO

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MasteringPythonNetworkingEnglish|2017|ISBN-10:1784397008|446pages|PDF+EPUB+MOBI(conv)|9.76MbKeyFeaturesBuildtheskillstoperformallnetworkingtasksusingPythonwitheaseUsePythonforNetworkDeviceAutomation,DevOps,andSoftwareDefinedNetworkingPracticalguidetonetworkingwithPythonBookDescriptionYouwillbeginwithareviewoftheTCP/IPProtocolSuiteandtorefreshthecoreelementsofthePythonlanguage.NextyouwillstartusingPythontoautomatenetworkdevicesandachieveallthatyouwantfromyournetwork.YouwillthenmovetousingPythonforDevOpswhereyouwillbesecuringnetworks,monitoringnetworks,andbuildingnetworkservices.Inthelastmodule,youwillusePythonforSDN,whereyouwillusePythonwithOpenFlow,OpenStack,OpenDayLight,andNFV.FinallyyouwilluseeverythingyouhavelearnedsofarinthisbooktoconstructaPython-basedmigrationplantogofromlegacytoascalableSDN-basednetwork.Bytheendofthebookyouwillhavealltheskillsrequiredtoperformcomplexnetwork-relatedtaskswithPythonWhatyouwilllearnReviewofallthefundamentalsofPythonandTCP/IPsuiteUsePythontoexecutecommandswhenthedevicedoesnotsupporttheAPIorprogrammaticinteractionwiththedeviceImplementautomationtechniquesbyintegratingPythonwithCisco,Juniper,andandAristaEAPIIntegrateAnsibleusingPythontocontrolCisco,Juniper,andAristanetworksAchieveNetworksecuritywithPythonBuildhigh-performingwebserviceswithPythonConstructaPython-basedmigrationplanfromlegacytoascalableSDN-basednetwork.Downloadfromicerbox.com

MasteringTypeScript-SecondEditionbyNathanRozentalsEnglish|6Mar.2017|ISBN:1786468719|651Pages|EPUB/PDF(conv)|12.4MBKeyFeaturesStartwiththebasics,thenenhanceyourknowledgewithin-depthdiscussionsonlanguagefeatures,third-partylibraries,designpatternsandmorePracticalexamplesthatshowhowtouseTypeScriptwithpopularframeworks,includingBackbone,Angular2,React,Aurelia,NodeandothersFocusontest-drivendevelopmenttobuildhighqualityapplicationsthataremodular,scalableandadaptableBookDescriptionTheTypeScriptlanguage,compilerandopen-sourcedevelopmenttoolsetbringsJavaScriptdevelopmentuptotheenterpriselevel.ItallowsustouseES5,ES6andES7JavaScriptlanguagefeaturestoday-includingclasses,interfaces,generics,modulesandmore.It'ssimpletypingsyntaxenablesbuildinglarge,robustapplicationsusingobject-orientedtechniquesandindustrystandarddesignprinciples.Packedwithpractical,real-worldexamples,thisbookisaguidetobringingthebenefitsofstronglytyped,object-orientedprogramminganddesignprinciplesintotheJavaScriptdevelopmentspace.Startingwithcorelanguagefeatures,andworkingthroughmoreadvancedtopicssuchasgenericsandasynchronousprogrammingtechniques,youwilllearnhowtogainmaximumbenefitfromyourJavaScriptdevelopmentwithTypeScript.Withastrongfocusontest-drivendevelopment,andcoverageofmanypopularandin-demandJavaScriptframeworks,youcanfast-trackyourTypeScriptknowledgetoaprofessionallevel.Bytheendofthisbook,youwillbeabletoconfidentlybuildTypeScriptapplications,whetheryouaretargetingAngular2,Aurelia,React,Backbone,NodeoranyotherJavaScriptframework.WhatyouwilllearnGainaninsightintocoreandadvancedTypeScriptlanguagefeaturesincludinginheritance,generics,asynchronousprogrammingtechniques,promises,decoratorsandmoreIntegrateyourexistingJavaScrip

googleEfficientDet算法中文版paper.将高效网络骨架与我们提出的BiFPN和复合尺度相结合，我们开发了一种新的对象检测器家族，称为高效Det，它始终以比以前的对象检测器更少的参数和FLOP来获得更好的精度。
图和图形显示COCO数据集上的性能比较。
在类似的精度约束下，我们的有效DET使用的FLOP比YOLOv3少28倍，FLOP比RetinaNet少30倍，FLOP比最近基于ResNet的NAS-FPN少19倍。
特别是，在单模型和单测试时间尺度下，我们的高效Det-D7实现了最先进的53.7AP和52M参数和325BFLOP，在1.5AP的情况下优于以前最好的检测器，而在4倍小和使用13倍少的FLOP。
我们的高效DET在GPU/CPU上也比以前的检测器快4倍至11倍。

1.TheByzantineGeneralsProblem(1982)byLeslieLamport,RobertShostakandMarshallPease2.GoTostatementsconsideredharmfull(1968)-byEdsgerW.Dijkstra3.ANoteonDistributedComputing(1994)-bySamuelC.Kendall,JimWaldo,AnnWollrathandGeoffWyant4.BigBallofMud(1999)-BrianFooteandJosephYoder5.NoSilverBulletEssenceandAccidentsofSoftwareEngineering(1987)-FrederickP.Brooks6.TheOpenClosedPrinciple(1996)-RobertC.Martin(UncleBob)7.IEEE1471-2000Arecommendedpracticeforarchitecturaldescriptionofsoftwareintensivesystems(2000)8.Harvest,Yield,andScalableTolerantSystems(1999)ArmandoFox,EricA.Brewer9.AnIntroductiontoSoftwareArchitecture(1993)-DavidGarlanandMaryShaw10.WhoNeedsanArchitect?(2003)MartinFowler

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