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1、外文原文ASP.NETCachingFunctionwiththeCreationofHighPerformanceWebJonothonOrtiz,《ASP.NETWebDevelopersGuide(VBL)》i.IntroductionSincethebirthoftheInternet,ITanddevelopmentstaffhasbeenfacingsuchproblems,thatis,howtocreaterapidresponsetouserrequestsforWebapplications,especiallyiftheserveris
2、processingalargenumberofrequestscanrespondquicklytouserrequestsforWebapplications.ASP.NETmodelprovidesmanybuiblt-infunctionstoenhanceperformance,cachingisoneoftheimportantfunctions.ii.BriefInpractice,thegenerationofhighperformance,ScalableWebapplicationsmostimportantfactorisoneofth
3、efirsttorequesttheseitemswillbestoredintheWebservicesTreasuryorrequestforastreamofothersoftware,suchasproxyserversorbrowsers,toavoidre-establishpreviousrequesttomeettheinformation,particularlythoserequiringalargenumberofprocessortimeorresources.Thisiscommonlyreferredtothecache,Ital
4、lowstheuseofavarietyoftechnologiesacrossHTTPrequestpageoutputorstorageapplicationdataanditsreuse,Serversdonotneedtore-createinformation,therebysavingtimeandresources.ASP.NETprovidestwocanbeusedtobuildhigh-performanceWebcachingapplicationtypes.Thefirstoneiscalledtheoutputcache,Itall
5、owsdynamicpageorusercontrolresponsestoredintheoutputstream(launchedfromtheservertorequestthebrowser)withanyHTTP1.1cachefunctionofequipment:.Whenbehindatthetimeoftherequest,thenon-implementationofapageorusercontrolcodefortheoutputbuffertomeettherequest.Theoutputbuffercachemaybetarge
6、tedattheentirepage,andcanalsobepartofpage.Thesecondtypeofcacheisatraditionalapplicationdatacache,Itcanbeusedtoprogrammaticallyarbitraryobject(eg,datasets)storagememorytotheserver,sothatApplicationprocedurescansavetheseobjectsre-establishthenecessarytimeandresources.iii.Cachewholepa
7、geASP.NETpermittingthebrowserfunctionofthemechanismfordynamiccachingtheentirepageresponse,Thesemechanismsrefersbrowsers,proxyserversandapplicationproceduresforthepresenceoftheWebserver.ItprovidesapowerfulmeanstoimproveWebapplicationperformance.Thistechniqueiscalledtheoutputcache,wh
8、ichallowsthecachetomeetbeh
