简介:摘要基于CORBA在Internet分布式应用中存在的问题,为了充分利用分布控制结构中对象到对象交互的优势,本文结合ORBA和Java的优势将二者集成,构建了ORBA/Java与Web下的三层体系机构,并进行了系统的流程分析和实现。
简介:TheBaBarExperimentcollectedaround20TBofdataduringitsfirst6monthsofrunning.Now,after18months,datasizeexceeds300TB,andaccordingtoprognosis,itisasmallfractionofthesizeofdatacominginthenextfewmonths,Inordertokeepupwiththedatasignificanteffortwasputintotuningthedatabasesystem,Itledtogreatperformanceimprovements,aswellastoinevitablesystemexpansion-450simultaneousprocessingnodesaloneusedfordatareconstruction.Itisbelieved,thatfurthergrowthbeyond600nodeswillhappensoon.Insuchanenvironment,manycomplexoperationsareexecutedsimultaneouslyonhundredsofmachines,puttingahugeloadondataserversandincreasingnetworktrafficIntroducingtwoCORBAservershalvedstartuptime,anddramaticallyoffloadeddatabaseservers:dataserversaswellaslockserversThepaperdescribesdetailsofdesignandimplementationoftwoserversrecentlyintroducedintheBabarsystem:conditionsOIDserverandClusteringServer,Thefirstexperienceofusingtheseserversisdiscussed.AdiscussiononaCollectionServerfordataanalysis,currentlybeingdesignedisincluded.
简介:摘要:本文简要介绍了轧机二级程序的逻辑结构,以及程序之间使用基于CORBA服务的通讯过程。使用基于CORBA对象服务的通讯程序比一般的套接字网络程序性能更可靠,软件重用性较强,开发起来也较简单。