Enterprise Java in 2011 and Beyond.From Java EE 6 To Cloud Computing – A Spring Perspectiv

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1、EnterpriseJavain2011andBeyondFromJavaEE6ToCloudComputing–ASpringPerspectiveJürgenHöller,PrincipalEngineer,SpringSourceCONFIDENTIAL©2010SpringSource,AdivisionofVMware.AllrightsreservedDeploymentPlatforms:BecomingMoreDiverseApplicationApplicationApplicationFrameworksFrameworksFrameworks+Libs+Libs+L

2、ibsWebSphereTomcatCloudPlatformCONFIDENTIAL2TheStateofDeploymentPlatformsin2011JavaEEmovingontoJavaEE6•GlassFish3•JBoss6•OtherserversstillonJavaEE5(atbest)TomcatmovingontoTomcat7•Servlet3.0based(JavaEE6level)CloudplatformsbecomingaseriousoptionforregularJavawebapplicationdeployment•GoogleAppEn

3、gine:Jetty++•AmazonElasticBeanstalk:Tomcat++CONFIDENTIAL3JavaEE6Severalinterestingspecifications•Servlet3.0•JAX-RS1.1•JSF2.0•JPA2.0•EJB3.1•CDI1.0•BeanValidation1.0But:typicallynotusedasabundleyet•nomainstreamEE6serverswithenterprisesupportavailableyet•instead:individualspecificationsaddedtoTomc

4、atortoEE5serversCONFIDENTIAL4CloudPlatformsa.k.a.„PlatformasaService“(PaaS)•„publiccloud“:availablethroughashared,publichost•„privatecloud“:virtualizationplatforminsideacorporatedatacenterTypically:apre-installedwebcontainerwithadditionalservices•datastores(notnecessarilyarelationaldatabase!)•m

5、essaging,clusteredsessions,clusteredcache,etcTheaforementionedGoogleAppEngineandAmazonElasticBeanstalkaregreatexamples•commonground:WARdeployment,ServletAPI,JPA–ignoringJavaEE•severalfurtherofferingstoshowtheirpromiseinthecourseofthisyearCONFIDENTIAL5WideVarietyofDataandDatastoresNotalldataresi

6、desinrelationaldatabases•cloudenvironmentsoftensuggestalternativesforscalabilityreasons•BigTable,Redis,Mongo,etcDistributedcachesaddchallengesaswell•notleastofitallintermsofapplication-levelaccesspatterns•GemFire,Coherence,etcHardlyanystandardizationavailable•justanabandonedcachingJSRthatnevera

7、chievedafinalrelease•caching–butonlycaching–possiblygettingpickedupinJavaEE7•alternativedatastorespaceistoodiverseCONFIDENTIAL6WideVarietyofWebClientsMoreandmoreclient-sidewebtechnologies•HTML5asanext-generationbrowse