NET技术代言人

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1、提昇應用程式的效能ImprovingPerformanceandScalabilityMicrosoft.NET技術代言人林耀珍林耀珍經歷第三波資訊技術總監育碁數位科技總經理專業認證與專長微軟.NET技術軟體開發流程，資訊系統規劃MicrosoftMCSD/MCSE/MCDBA物件導向技術，RationalOOAD認證講師LotusNotesprincipleCLP/CLIJ2EE2.NET技術代言人　林耀珍2004/03/24目標與對象對象技術平台的決策人員軟體建構師系統分析師專案經理應用程式開發人員目標開發高效能的應用程式3.NET

2、技術代言人　林耀珍2004/03/24AgendaOverviewFrameworkforimprovingPerformancePerformanceModelingTestingProcessDesignGuidelinesImprovingASP.NETPerformance4.NET技術代言人　林耀珍2004/03/24PerformanceCategoriesSpeedDoestheapplicationrespondquicklyenoughfortheintendedusers?ScalabilityWilltheappl

3、icationhandletheexpecteduserloadandbeyond?StabilityIstheapplicationstableunderexpectedandunexpecteduserloads?5.NET技術代言人　林耀珍2004/03/24ToughChallengesSimple->HighPerformanceMonolithicprogramrunsonahugemachineLifeisnotsosimpleMoredemandsSecurityissuesInternetmakesthingsmore

4、complexScalabletosupportmoreusersLessresources/time/manpowertodotheseworksArchitectures&Components&Designsareusedtoincreasedevelopers’productivities,butaddchallengesforustobuildhighperformancesystem.6.NET技術代言人　林耀珍2004/03/24CommonPitfall-OptimizeLaterPerformanceistypicall

5、yignoreduntilthereisaproblem.Thereareseveralproblemswiththisapproach:PerformanceproblemsareoftenintroducedearlyinthedesignDesignissuescan’talwaysbefixedthroughtuningormoreefficientcodingFixinganarchitectureordesignissuelaterinthecycleisinefficientandoftenveryexpensive.7.

6、NET技術代言人　林耀珍2004/03/24CommonPitfall-MakeitperfectearlyDevelopersworkonoptimizingeverythingupfront.Thisresultsin:“GoldPlated”codeHighlyoptimizedcodethatisrarelyexecutedMissedschedules8.NET技術代言人　林耀珍2004/03/24NeedabetterwayDefiningperformancetargetsMeasuringperformanceTroub

7、leshootingperformanceproblems80/20Rule:80%ofperformanceproblemsarecausedby20%oftheissuesTunesystemRegularlymonitorperformancetrendsArchitectingsystemsthathavetherightbalanceofsecurity,performance,manageabilityandscalability9.NET技術代言人　林耀珍2004/03/24FrameworkforimprovingPer

8、formance10.NET技術代言人　林耀珍2004/03/24#1PrincipleHardwareTuningProductTuningCodeTuningDesignRequirementsGrea