jan de vries, antifragility applied to dev ops. and to your life
TRANSCRIPT
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Antifragility
Applied to DevOps And to your life
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JandeVries
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Business Informa1on Technology
Strategic
Tac1c
Opera1onal
9squaremodel
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Business Informa1on Technology
Strategic
Tac1c
Opera1onal
9squaremodel
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Business Informa1on Technology
Strategic
Tac1c
Opera1onal
9squaremodel
BiSL Next ITIL
ASL
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Business Informa1on Technology
Strategic
Tac1c
Opera1onal
9squaremodel
BiSL Next ITIL
ASL
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Business Informa1on Technology
Strategic
Tac1c
Opera1onal
9squaremodel
DevOps
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NassimNicholasTaleb
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Variable
Gain
Pain
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Variable
Gain
Pain
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Variable
Gain
Pain
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Asymmetryiskey
Defini1on:• anythingthathasmoreupsidethandownsidefromrandomevents/shocksisan1fragile;
• thereverseisfragile.• tojudgethe(an1)-fragilityofasystemistoaskwhetheritisaccelera1ngtowardsharmorbenefit
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Variable
Gain
Pain
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Variable
Gain
Pain
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Variable
Gain
Pain
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Variable
Gain
PainConcave Convex
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Variable
Gain
Pain Concave Convex
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Numberofdeploymentspermonth
Gain
Pain
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Numberoftaskscoordinatedinaproject
Gain
Pain
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Smileorfrown
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The'opposites'offragile
• Robust• Resilient• An1fragile
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Source:Soge1
Gain
Time
Pain
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Fragile
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Fragile
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Fragile
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Robust
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RobustinIT
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Resilient
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Resilient
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An1fragile
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§ Latencymonkey§ Janitormonkey§ Conformitymonkey§ Chaosgorilla
An1fragileinIT
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Source:Soge1
Gain
Time
Pain
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Howtobecomelessfragile,evenan1fragile?
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Defini1on:
• Stablesystems,becausetheydon’tchange,eventuallyexperienceshockslargeenoughtocausecatastrophicfailure.
• An1fragilesystemsbreakaliZleallthe1mebutevolveasaresult,becominglesspronetocatastrophicfailure.
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DisordersinIT
• Thechange->so\waremustbeadaptedtothebusinessneeds– changingexis1ngfunc1onality– implemen1ngnewrequirements– supportnewbusinessopportuni1es
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FragileinIT
– noteasytochange,toextend,todeploy– notabletohandleunexpecteduserinputsorexternalsystemfailures
– carryingtechnicaldebt
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RobustinIT
– Unix
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ResilientinIT
– retrymechanisms– selfhealing,autorepair
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An1fragilityinIT
– autoscaling
– microservices
– con1nuousdeployments
– chaosengineering
– opensource
Itisnotjustaso\waresystembutasocial-technicalsystem
Source: https://developers.redhat.com/blog/2016/07/20/from-fragile-to-antifragile-software/ Bilgin Ibryam
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Asymmetryiskey
• op1onality
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Defini1on:– anop1onisacontractwhichgivesthebuyertheright,butnottheobliga1on,tobuyorsellanunderlyingassetorinstrumentataspecifiedstrikepriceonaspecifieddate,dependingontheformoftheop1on.
– afinancialop1onsisexpensive– non-financialop1onsareusuallyfreeorcheap,but....wedon'trecognisethem.
Op1on
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Time
Changeinvalue
An1fragile1nkering
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TheUnicornClubDon’tlecturebirdshowtofly
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TinkeringinIT
Thethirdway,con1nualexperimenta1onandlearning
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Time
Changeinvalue
Fragile1nkering
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ViaNega1va
Defini1on
• thebestwayforapersonororganiza1ontobecomean1fragileistofirstdecreasetheirdownside:things,people,ac1ons,habits,orsystemsthatmakeyouvulnerabletovola1lityandrisk.
• nega1veknowledge(whatiswrong,whatdoesnotwork)ismorerobusttoerrorthanposi1veknowledge(whatisright,whatworks).
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Time
Changeinvalue
Fragile
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ViaNega1vainIT
Getridof:• hand-offsbetweenteams(Spo1fy)• poli1cs,fearandego(Spo1fy)• technicaldebt=whatyoufeelthenext1meyouwanttomakeachange(GeneKim)
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http://www.cibit.nl/nl/nieuws/blogs/melk-produceren-of-poepscheppen/ Source: Brian Teunissen, Inspearit
Technicaldebt?
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Technical debt backlog
Improvement backlog
Tasks
4backlogsmake1
Productbacklog
Defectbacklog
TechnicalDebtbacklog
ImprovementBacklog
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http://www.cibit.nl/nl/nieuws/blogs/melk-produceren-of-poepscheppen/
4backlogsmake1
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Bitethebullet
http://www.cibit.nl/nl/nieuws/blogs/melk-produceren-of-poepscheppen/
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Skininthegame
Defini1on:• apersonhassomethingtoloseinagivensitua1on
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Skininthegamemissing(silo's)
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Skininthegamemissing(projects)
• PRINCE2definesaprojectas“Atemporaryorganisa1onthatisneededtoproduceauniqueandpredefinedoutcomeorresultatapre-specified1meusingpredeterminedresources.”
• Theprojectmodelleadsto
– chasingdateoverbenefit
– chasing1meoverbenefit
– chasingcostoverbenefit
– chasingfeaturesoverbenefit
Source:AllanKelly
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• Themostdestruc1veideaknowntoso\waredevelopment:temporaryorganisa1ons
• Disbandingteamsdestroys• Knowledge• Capability• Performance
Source:AllanKelly
Skininthegamemissing(projects)
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DevOpsteamsinsteadofprojects
Directrela1onshipbetweencustomerandDevOpsteamjustexecutetheproductbacklogInsteadofstaffingprojects
Bringtheworktothescrumteam
– Noresourceshuffling– Reliablevelocity– ClearCostofOwnershipperbusinessline
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AdviceforIT
• Deploysmallpiecesoffunc1onalitytoexposeasystemtoalargenumberofsmallershocks.
• Avoidtechnicaldebt• Keepsomefatonthemeat• Seekop1onality• Keepthingssmallbutnetworked• Ensurethatindividualsthatmakedecisionshaveskininthegame
Source:FrankPoZer
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Adviceforyourbusiness
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Adviceforyou
hZp://gelngstronger.org
Spending1mewithotherpeopleandcollaboratewiththem.Poten1allylargeupside,almostnodownside
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Adviceforyou
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