DevOps for Databases - Microsoft€¦ · DevOps for Databases With examples in MS SQL Server. Sergey Olontsev SQL Server MVP, MCM. [email protected] @SergeyOlontsev http ...

DevOpsforDatabasesWithexamplesinMSSQLServer.

SergeyOlontsevSQLServerMVP,[email protected]@SergeyOlontsevhttp://olontsev.ru/http://SergeyOlontsev.com/

OlontsevAcademy©2017

SergeyOlontsevSoftwareExpert,KasperskyLab

SQLServer12+years.ETL,HighLoad andBigData,performancetuning.

[email protected]@SergeyOlontsevhttp://olontsev.ru/http://SergeyOlontsev.com/


DevOps


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

Byintegratingregularly,youcandetecterrorsquickly,andlocatethemmoreeasily.

ContinuousDeployment(CD) iscloselyrelatedtoContinuousIntegrationandreferstothereleaseintoproductionofsoftwarethatpassestheautomatedtests.


Databasevs.Application


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


DBA


DatabaseConfiguration&OtherStuff

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

errors,etc.)• DatabaseIndexes&MaintenancePlans• Backups


InfrastructureasCode


DatabaseTesting

UnitIntegrationPerformance


WhatisTDD?

Test-firstdevelopmentJWriteenough codetopasstests

Unfortunately,notsowidelyusedbydatabasedevelopers.


SomeConcepts

Alltestsshouldbeautomatedandeasilyre-runnablebyanydeveloperinyourteam.

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

Itcouldbeevenstoredproceduresorpowershell scriptswrittenbyyou.


Benefits

• Easyandquickcodecheckingforcorrectbehaviorinspecifiedusecases.

• Simpleensuringthatnothingisbrokenwhenaddingnewfeatureorchanginglogic.

• Helpsyoueasilychangecodewrittenbyotherteammembers.


Whystillnotsoused?

• Lackofknowledge.• Notimeordesiretolearnanewtool.• Ittakesalotmoretimetowritetestsandpreparethe

infrastructure.


PerformanceConsiderations

• Yourtestsarejustcodethatrunsinsideyourdatabase.• Trynottoclearandinserttestdatabeforeeachtest.• Choosetoolsthatallowyoutoreusetestscode(for

example,executingaseriesofstoredproceduresonebyone).


UnitTesting


NotaPerfectApproach

• Youcannotimagineallthescenariosthatcouldhappenintherealworld.Butyou’lldefinitelyreducetheamountofbugs.

• Createintegrationtestingsolutionstocheckhowyoursystemworksasawhole.

• Loadtestingwillhelpyoutochecktheperformanceandbehaviorofcriticalqueries.


ContinuousIntegration

• Eachcommittriggersanautomaticallydeploymentandfulltestcircle.

• Don’tcommitsmallchangestothecommonrepository.

• Runsimpletestsonyourlocalmachinefirst.• AvailableinTFS,TeamCity,etc.


PerformanceTesting– TheWrongWay


PerformanceTesting– TheRightWay


NewVersion


GeneratingDeploymentScripts

SSDTDemo


DevCon 2013


DeploymentPipeline


Tools


OneKeyDifference


Questions?

DevOps for Databases - Microsoft€¦ · DevOps for Databases With examples in MS SQL Server. Sergey Olontsev SQL Server MVP, MCM. [email protected] @SergeyOlontsev http ...

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