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1、UsingWebPageTestWebPerformanceTestingforNovicesandPowerUsersRickViscomi,AndyDavies,andMarcelDuranUsingWebPageTestbyRickViscomi,AndyDavies,andMarcelDuranCopyright©2016RickViscomi,AndyDavies,andMarcelDuran.Allrightsreserved.PrintedintheUnitedStatesofAmerica.PublishedbyO’ReillyMedia,Inc.,1005Gr
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3、Editors:CourtneyNashandBrianAndersonProductionEditor:ShinyKalapurakkelCopyeditor:GillianMcGarveyProofreader:EileenCohenIndexer:WendyCatalanoInteriorDesigner:DavidFutatoCoverDesigner:KarenMontgomeryIllustrator:RebeccaDemarestOctober2015:FirstEditionRevisionHistoryfortheFirstEdition2015-10-09:
4、FirstReleaseSeehttp://oreilly.com/catalog/errata.csp?isbn=9781491902592forreleasedetails.TheO’ReillylogoisaregisteredtrademarkofO’ReillyMedia,Inc.UsingWebPageTest,thecoverimage,andrelatedtradedressaretrademarksofO’ReillyMedia,Inc.Whilethepublisherandtheauthorshaveusedgoodfaitheffortstoensure
5、thattheinformationandinstructionscontainedinthisworkareaccurate,thepublisherandtheauthorsdisclaimallresponsibilityforerrorsoromissions,includingwithoutlimitationresponsibilityfordamagesresultingfromtheuseoforrelianceonthiswork.Useoftheinformationandinstructionscontainedinthisworkisatyourownr
6、isk.Ifanycodesamplesorothertechnologythisworkcontainsordescribesissubjecttoopensourcelicensesortheintellectualpropertyrightsofothers,itisyourresponsibilitytoensurethatyourusethereofcomplieswithsuchlicensesand/orrights.978-1-491-90259-2[LSI]ForewordIhavemanytoolsinmywebperformancetoolkit.Chro
7、meDevToolsismygotoforinbrowserperformanceanalysis.IusethePageSpeedInsightsandYSlowextensionsforconvertingperformanceobservationsintoactions.Ilovebookmarklets,especiallyfordoingperformanceanalysisinmobilebrowsers.ThewebsitesIrunaremonitoredusingseve