variablesserverless

@k_bankoleOpenWhisk.
orgTheOpenWhiskPlatformCloudnativeServerlessEventdrivenMicroservices@k_bankoleOpenWhisk.
orgWhatyouwilllearntodayHowcloudcomputinghasrecentlyevolvedtoenabledeveloperstowritecloudnativeapplicationsbetter,faster,andcheaperusingserverlesstechnology.
HowOpenWhiskprovidesanopensourceplatformtoenablecloudnative,serverless,eventdrivenapplications.
@k_bankoleOpenWhisk.
orgIntroducingserverless,eventdrivencomputing@k_bankoleOpenWhisk.
orgCloudadvancesmeandeveloperscanwriteappsbetter,faster,andcheaperBaremetalVirtualmachinesContainersFunctionsDecreasingconcern(andcontrol)overstackimplementationIncreasingfocusonbusinesslogic@k_bankoleOpenWhisk.
orgWhatis"Serverless"AllowsDeveloperstooffloadoperationaltasks,suchashosting,scaling"Functionasaservice",similarto"PlatformasaService"TreatscomputeresourcesasutilitiesSolutionsbeingofferedbyAmazon,Microsoft,Google@k_bankoleOpenWhisk.
orgVMsvsContainers@k_bankoleOpenWhisk.
orgManyworkloadsmatchserverless,eventdrivenprogrammingExecuteapplogicinresponsetodatabasetriggersExecuteapplogicinresponsetosensordataExecuteapplogicinresponsetocognitivetrendsExecuteapplogicinresponsetoscheduledtasksProvideeasyserver-sidebackendformobileapp@k_bankoleOpenWhisk.
orgIt'sexpensivetoscalemicroservicesExplosioninnumberofcontainers/processes:1.
Increaseofinfrastructurecostfootprint1.
IncreaseofoperationalmanagementcostandcomplexityRegionBRegionABreak-downintomicroservicesMakeeachmicroserviceHAProtectagainstregionaloutagesMonolithicapplication@k_bankoleOpenWhisk.
orgProgrammingandpricingmodelsaren'tefficientContinuouspollingneededintheabsenceofaneventdrivenprogrammingmodel.
Chargedforresources,evenwhenidle.
Worriespersistaboutcapacitymanagement.
SwiftApplicationContainerVMCF2Polling1bRequest1a@k_bankoleOpenWhisk.
orgBillingmodeloffersabettermatchbetweenappandresourcesApplicationschargedbycomputetime(millisecond)ratherthanreservedmemory(GB/hour).
Whilemanyapplicationsmuststillbedeployedinadaemonmodel,serverlessprovidesanalternativethatcanmeansubstantialcostsavingsforavarietyofeventdrivenworkloads.
Greaterlinkagebetweencloudresourcesusedandbusinessoperationsexecuted.
@k_bankoleOpenWhisk.
orgServerlessoffloadsmostcloudnativeapp12FactorconcernsICodebaseHandledbydeveloper(Manageversioningoffunctionsontheirown)IIDependenciesHandledbydeveloper,facilitatedbyserverlessplatform(Runtimesandpackages)IIIConfigHandledbyplatform(Environmentvariablesorinjectedparameters)IVBackingservicesHandledbyplatform(Connectioninformationinjectedasparameters)VBuild,release,runHandledbyplatform(Deployedresourcesareimmutableandinternallyversioned)VIProcessesHandledbyplatform(Singlestatelesscontainersoftenused)VIIPortbindingHandledbyplatform(Actionsorfunctionsareautomaticallydiscovered)VIIIConcurrencyHandledbyplatform(Processmodelishiddenandscalesinresponsetodemand)IXDisposabilityHandledbyplatform(Lifecycleishiddenfromtheuser,faststartupandelasticscaleisprioritized)XDev/prodparityHandledbydeveloper(Thedeveloperisthedeployer)XILogsHandledbyplatform(Developerwritestoconsole.
log,platformhandleslogstreaming)XIIAdminprocessesHandledbydeveloper(Nodistinctionbetweenoneoffprocessesandlongrunning)@k_bankoleOpenWhisk.
orgTechnologicalandbusinessfactorsmakeserverlesscompellingServerlessplatformsandframeworksaregainingtractionCostmodelsaregettingmoreefficientEventdrivenworkloadsneedautomatedscaleCloudisevolvingtofacilitate12Factorsdesignfordeveloper@k_bankoleOpenWhisk.
orgEnterOpenWhisk,afabricandplatformfortheserverless,eventdrivenprogrammingmodel@k_bankoleOpenWhisk.
orgOpenWhiskprovidesanelegantsolutionOpenWhiskisacloudplatformthatexecutescodeinresponsetoevents@k_bankoleOpenWhisk.
orgTriggers,actions,rules(andpackages)Servicesdefinetheeventstheyemitastriggers.
Developersassociateactionstohandletheeventsviarules.
PackagesareusedtobundleanddistributesetsofactionsTARP@k_bankoleOpenWhisk.
orgTriggersAclassofeventsthatcanhappenTSocialeventsDatachangesDevicereadingsLocationupdatesUserinput@k_bankoleOpenWhisk.
orgActionsCodethatrunsinresponsetoanevent(thatis,anevent-handler)A@k_bankoleOpenWhisk.
orgActionsCanbewritteninavarietyoflanguages,suchasJavaScript,Python,Java,andSwiftAfunctionmain(msg){return{message:'Hello,'+msg.
name+'from'+msg.
place};};@k_bankoleOpenWhisk.
orgActionsOranyotherarbitrarybinarywithDockerA@k_bankoleOpenWhisk.
orgActionsCanbecomposedtocreatesequencesthatincreaseflexibilityandfosterreuseAAA:=A1+A2+A3AB:=A2+A1+A3AC:=A3+A1+A2@k_bankoleOpenWhisk.
orgRulesAnassociationofatriggertoanactioninamanytomanymapping.
RR:=TA@k_bankoleOpenWhisk.
orgPackagesAsharedcollectionoftriggersandactionsPAAreadwriteTchangesAtranslateAforecastApostTtopicOpenSourceAmyActionTmyFeedYoursTcommitThirdParty@k_bankoleOpenWhisk.
orgOpenWhiskexecutionmodelPoolofactionsSwiftDockerJSTrigger1RunningactionRunningactionRunningaction3OpenWhiskEngine2@k_bankoleOpenWhisk.
orgOpenWhiskcanimplementRESTmicroservicesIncomingHTTPrequest,e.
g.
HTTPGETapp.
com/customers1InvokeOpenWhiskactionget-customersBrowserMobileAppWebApp2JSSwiftDocker…OpenWhisk@k_bankoleOpenWhisk.
orgOpenWhiskenableseventdrivenapplicationsEventProvidersCloudantGitHubWeather…WhichtriggersexecutionofassociatedOpenWhiskaction2SlackJSSwiftDocker…Aneventoccurs,forexampleCommitpushedtoGitHubrepositoryDataenteredinCloudant1OpenWhisk@k_bankoleOpenWhisk.
orgWatsonIOTOpenWhiskCustomerregistryShippingsystemSendGridServicereportsactionsIBMCloudLOB,SoRsystems&databasesNeedanewfilterEmail:Filteronitsway!
OpenWhisk.
org@DanielKroo@k_bankoleOpenWhisk.
orgOpenWhiskhighlevelimplementationarchitecture@k_bankoleOpenWhisk.
orgOpenWhiskunderthehoodConsulCouchDBRouter(NGINX)ControllerKafkaInvokerInvokerDockerExecutorExecutorDockerJavaSwiftExecutorExecutorNodeJSPython1.
RouterreceivesrequesttoAPIviaCLIorUI2.
ControllerchecksentitlementanddispatchesrequeststoKafka3.
Invokerspullrequestsandstartexecutionoftheaction@k_bankoleOpenWhisk.
orgSummary@k_bankoleOpenWhisk.
orgServerlessBenefitsAflexibleprogrammingenvironmentAnopenecosystemofbuildingblocksComputetaskoutsourcingtothecloudNoserverstomanageormaintainAutomaticscalingtomatchworkloadBuilt-infaulttoleranceApay-as-you-gomodel@k_bankoleOpenWhisk.
orgJoinustobuildaserverlessplatformforthefuture!
OpenWhisk.
orgdwopen.
slack.
com#openwhisk@k_bankoleOpenWhisk.
orgWhatyoulearnedtodayWe'reintheearlydaysofanevolutionthatisempoweringdeveloperstowritecloudnativeapplicationsbetter,faster,andcheaperOpenWhiskprovidesanopensourceplatformtoenablecloudnative,serverless,eventdrivenapplications@k_bankoleOpenWhisk.
orgBut,thisisstillearlyintheevolutionofserverlessTherearestillroughareastobeaddressed–Monitoring,debugging,developertooling,workflows,andvisibilityrequiremorework.
TheBluemixhostedtoolssuchaswebIDEandconsolearevalueaddedservices.
–Bestpracticesandcommonmessageformatsneedtobedistilled.
–TheflexiblepolyglotnatureofOpenWhiskmustbebalancedwithdeveloperresponsibility(e.
g.
,Dockerimage,npmbuildstep)@k_bankoleOpenWhisk.
orgOpenWhiskaddressesmanycommonworkloadsOpenWhiskcanhelppowervariousmobile,webandIoTappusecasesbysimplifyingtheprogrammingmodeloforchestratingvariousservicesusingeventswithoutadedicatedbackend.
DigitalappworkloadsBigData/AnalyticspipelineComplexdatapipelinesforBigData/Analyticstaskscanbescriptedusingchangesindataservicesorstreamsfornearreal-timeanalyticsandfeedback.
DevOpsandinfrastructureascodeOpenWhiskcanbeusedtoautomateDevOpspipelinesbasedoneventstriggeredfromsuccessfulbuilds,orcompletedstaging,orago-liveevent.
MicroservicesbuilderOpenWhiskcanbeusedtoeasilybuildmicroservicesgiventhefootprintandprogrammingmodeldesiredbymicroservices@k_bankoleOpenWhisk.
orgOpenWhiskdesignprinciples1.
Provideanopeninterfaceforeventproviders2.
Offerpolyglotsupportandsimpleextensibilityfornewruntimes3.
Supporthigherlevelconstructsasappropriate(e.
g.
actionsequences)4.
Scaledynamicallyonaperrequestbasis5.
Enablesharingofactionsandeventproviders6.
Leveragebestofbreedopensourcesoftware(Docker,Kafka,Consul,…)7.
UsetheApache2License