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1、TheeBayArchitectureStrikingabalancebetweensitestability,featurevelocity,performance,andcostSDForum2006eBay,Inc.PresentedBy:RandyShoupandDanPritchettDate:November29,2006Whatwe’reupagainst•eBaymanages…–Over212,000,000registeredusers–Over1BillionphotosAsportinggoodsellsevery2secondsAnSUVissoldever
2、y5minutes–eBayusersworldwidetrademorethan$1590worthofgoodseverysecond–eBayaveragesover1billionpageviewsperday–Atanygiventime,thereareapproximately105millionlistingsonthesite–eBaystoresover2Petabytesofdata–over200timesthesizeoftheLibraryofCongress!–TheeBayplatformhandles3billionAPIcallspermonthO
3、ver½MillionpoundsofKimchiaresoldeveryyear!•Inadynamicenvironment–300+featuresperquarteBay,Inc.er–Weroll100,000+linesofcodeeverytwoweeks•In33countries,insevenlanguages,24x7>26BillionSQLexecutions/day!2©2006eBayInc.eBay’sExponentialGrowth105MillionListings212MillionUserseBay,Inc.Q1Q2Q3Q4Q1Q2Q3Q4Q
4、1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q3Q4Q1Q2Q31998199920002001200220032004200520064©2006eBayInc.VelocityofeBay--SoftwareDevelopmentProcessFeature212MUsers300+FeaturesFeatureTrain99.94%PerQuarterFeature100KLOC/Wk6MLOC•Oursiteisourproduct.Wechangeitincrementallythroughimplementingnewfeatur
5、es.•VerypredictabledevelopmenteBay,Inc.process–trainsleaveon-timeatregularintervals(weekly).•Paralleldevelopmentprocesswithsignificantoutput--100,000LOCperrelease.•Alwayson–over99.94%available.Allwhilesupportinga24x7environment5©2006eBayInc.SystemicRequirementsAvailabilityReliabilityEnableseaml
6、essgrowthMassiveScalabilitySecurityMaintainabilityDeliverqualityfunctionalityatFasterProductacceleratingratesDeliveryArchitectfortheeBay,Inc.futureEnablerapidbusinessinnovation10XGrowth6©2006eBayInc.ArchitecturalLessons•ScaleOut,NotUp–Horizontalscalingateverytier.–Functionaldecomposition.•Prefe
7、rAsynchronousIntegration–Minimizeavailabilitycoupling.–Improvescalingoptions.•VirtualizeComponents–Reducephysicaldependencies.–Improvedeploymentflexibility.•DesignforFailureeBay,Inc.–Automatedfailuredetectionandnotification.–“Limp
