计算机专业毕业设计（论文）文献翻译-基于j2ee在分布式环境下的底层结构的自动动态配置应用

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1、本科毕业设计外文文献及译文文献、资料题目：InfrastructureforAutomaticDynamicDeploymentOfJ2EEApplicationinDistributedEnvironments文献、资料来源：网络文献、资料发表（出版）日期：2007.9院（部）：专业：班级：姓名：学号：指导教师：翻译日期：19外文文献：InfrastructureforAutomaticDynamicDeploymentOfJ2EEApplicationinDistributedEnvironmentsAnatolyAkkerman,AlexanderToto

2、k,andVijayKaramchetiAbstract:inordertoachievesuchdynamicadaptation,weneedaninfrastructureforautomatingJ2EEapplicationdeploymentinsuchanenvironment.ThisneedisquiteevidenttoanyonewhohasevertrieddeployingaJ2EEapplicationevenonasingleapplicationserver,whichisataskthatinvolvesagreatdealof

3、configurationofboththesystemservicesandapplicationcomponents.Keywords:j2ee;component;Distributed;DynamicDeployment;1IntroductionInrecentyears,wehaveseenasignificantgrowthincomponent-basedenterpriseapplicationdevelopment.TheseapplicationsaretypicallydeployedoncompanyIntranetsorontheIn

4、ternetandarecharacterizedbyhightransactionvolume,largenumbersofusersandwideareaaccess.Traditionallytheyaredeployedinacentrallocation,usingserverclusteringwithloadbalancing(horizontalpartitioning)tosustainuserload.However,horizontalpartitioninghasbeenshownveryefficientonlyinreducingap

5、plication-relatedoverheadsofuser-perceivedresponsetimes,withouthavingmucheffectonnetwork-inducedlatencies.Verticalpartitioning(e.g.,runningwebtierandbusinesstierinseparateVMs)hasbeenusedforfaultisolationandloadbalancingbutitissometimesimpracticalduetosignificantrun-timeoverheads(even

6、ifonewouldkeepthetiersonafastlocal-areanetwork)relatedtoheavyuseofremoteinvocations.Recentwork[14]inthecontextofJ2EEcomponentbasedapplicationshasshownviabilityofverticalpartitioninginwide-areanetworkswithout19incurringtheaforementionedoverheads.Thekeyconclusionsfromthatstudycanbesumm

7、arizedasfollows:•Usingproperlydesignedapplications,verticaldistributionacrosswide-areanetworksimprovesuser-perceivedlatencies.•Wide-areaverticallayeringrequiresreplicationofapplicationcomponentsandmaintainingconsistencybetweenreplicas.•Additionalreplicasmaybedeployeddynamicallytohand

8、lenewrequest