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DevOpsforDatabasesWithexamplesinMSSQLServer.

SergeyOlontsevSQLServerMVP,MCM.sergey@olontsev.biz@SergeyOlontsevhttp://olontsev.ru/http://SergeyOlontsev.com/

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SergeyOlontsevSoftwareExpert,KasperskyLab

SQLServer12+years.ETL,HighLoad andBigData,performancetuning.

sergey@olontsev.biz@SergeyOlontsevhttp://olontsev.ru/http://SergeyOlontsev.com/

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DevOps

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CI&CDContinuousIntegration(CI) isadevelopmentpracticethatrequiresdeveloperstointegratecodeintoasharedrepositoryseveraltimesaday.Eachcheck-inisthenverifiedbyanautomatedbuild,allowingteamstodetectproblemsearly.

Byintegratingregularly,youcandetecterrorsquickly,andlocatethemmoreeasily.

ContinuousDeployment(CD) iscloselyrelatedtoContinuousIntegrationandreferstothereleaseintoproductionofsoftwarethatpassestheautomatedtests.

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Databasevs.Application

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DatabaseStructure&Codecreate table [dbo].[Orders] (

[OrderId] int not null,[CustomerId] int not null

);go

create procedure [dbo].[GetOrders]asbegin

set nocount on;

select[OrderId],[CustomerId]

from [dbo].[Orders];end;go

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DBA

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DatabaseConfiguration&OtherStuff

• Securitypermissions• Serverconfiguration• Serverlevelobjects(linkedservers,jobs,custom

errors,etc.)• DatabaseIndexes&MaintenancePlans• Backups

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InfrastructureasCode

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DatabaseTesting

UnitIntegrationPerformance

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WhatisTDD?

Test-firstdevelopmentJWriteenough codetopasstests

Unfortunately,notsowidelyusedbydatabasedevelopers.

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SomeConcepts

Alltestsshouldbeautomatedandeasilyre-runnablebyanydeveloperinyourteam.

Probably“one-clicksolution”orevenfullyautomatedone.EitherintegratedinyourIDE(VisualStudio)orarecreatedusingthirdpartyframework

Itcouldbeevenstoredproceduresorpowershell scriptswrittenbyyou.

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Benefits

• Easyandquickcodecheckingforcorrectbehaviorinspecifiedusecases.

• Simpleensuringthatnothingisbrokenwhenaddingnewfeatureorchanginglogic.

• Helpsyoueasilychangecodewrittenbyotherteammembers.

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Whystillnotsoused?

• Lackofknowledge.• Notimeordesiretolearnanewtool.• Ittakesalotmoretimetowritetestsandpreparethe

infrastructure.

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PerformanceConsiderations

• Yourtestsarejustcodethatrunsinsideyourdatabase.• Trynottoclearandinserttestdatabeforeeachtest.• Choosetoolsthatallowyoutoreusetestscode(for

example,executingaseriesofstoredproceduresonebyone).

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UnitTesting

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NotaPerfectApproach

• Youcannotimagineallthescenariosthatcouldhappenintherealworld.Butyou’lldefinitelyreducetheamountofbugs.

• Createintegrationtestingsolutionstocheckhowyoursystemworksasawhole.

• Loadtestingwillhelpyoutochecktheperformanceandbehaviorofcriticalqueries.

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ContinuousIntegration

• Eachcommittriggersanautomaticallydeploymentandfulltestcircle.

• Don’tcommitsmallchangestothecommonrepository.

• Runsimpletestsonyourlocalmachinefirst.• AvailableinTFS,TeamCity,etc.

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PerformanceTesting– TheWrongWay

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PerformanceTesting– TheRightWay

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NewVersion

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GeneratingDeploymentScripts

SSDTDemo

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DevCon 2013

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DeploymentPipeline

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Tools

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OneKeyDifference

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Questions?