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1、IsJavaEERelevanttotheCloud?DrMarkLittleRedHat,Inc.1/10/20111•Yes.ThanksforcomingandseeyouatJavaOne2012!2Background•Researchintofault-tolerantdistributedsystemssince1986•Arjuna,Argus,Isis/Horus,Emerald,Xerox,…•DCE,CORBA,Java,HTTP,WebServices,…•ActiveinOMG,OASIS,W3C,JCP
2、,GGFandothers•InvolvedwithWebServicessince1999•Co-authorofanumberofWS-*3Agenda•Cloud101•Middleware101•JavaEE6•EE6meetstheCloud•EnterprisePaaS•Youdon’thavetowaitforEE7!•BeyondEE64WhatisCloudComputing?ACloudprovidesanabstractionlayertoCloud:Resourceabstraction,managesca
3、leandSecondAbstractioncomplexitymapscloudtovirtualresources•Selfservice•Abstracted,elasticresourcesVirtualization:Hardwareabstraction,•Location-independentFirstAbstractionmapsstorage&servicesvirtualtophysicalresources•Users,Groups•Accounting•API's,Drivers,ToolsBaremet
4、al:Fullaccess,NoAbstraction•Federation5GoalsofCloud•One(virtual)computersystemthatisableto…•Copewitharbitraryloadsandapplications•“RunmyapplicationssecurelywhenIwantyouto.”•Managedbysomeoneelse•Secure•Reliable•Cheap(costeffective)•“EmulatethesystemIwoulddeploylocallyi
5、fIcouldaffordit.”6WhyusePaaS?RAPIDDEPLOYMENTPAY-AS-YOU-GROWFOCUSONTHEAPPELASTICSCALINGNOTTHEINFRASTRUCTURE7“Cloud”wasinevitable•Therearealreadymoremobiledevicesthancomputers•Thereare4xmoreprocessorsontheplanetthanpeople•MosthaveTCPstacks•dsPIC33FJ12GP16-bitmicrocontro
6、llerhasasmuchhorsepowerasaVAX(40MIPs),canhandle16+sensors,andis1/8thesizeofapenny•Ubiquitouscomputingisheretostay8Middlewareovertheyears•RPCfirstusedinthe1970’stolinkUnixsystems•Bespokeimplementationsthroughthe80’s•Argus,Emerald,Arjuna,Camelot/Avalon,ISIS•Standardsbeg
7、antoevolve•ANSA•DCE•Morecross-vendorindustrialstandards•CORBA•J(2)EE•WebServices91040yearsofmiddlewareshows...•Manythingscommon•Security•Transactions•Replication/Cacheing•Datastore(e.g.,database)•Distribution•Multi-tenancy(multi-threaded/multi-application)•Theindustry
8、hasspent40+yearsdesigningenterpriseinfrastructures11Sowhatdoesthisallmean?•Middlewareisneededwhateverthedeploymentenvironmen
