a n i n t r o t o c o n t i n u o u s d e l i v e r y
LET’S RELEASE IT
Rouan Wilsenach @rouanw
thoughtworks.com
THE LAST MILEDoes this look familiar?
2
Analysis & Design
Development
Test & Showcase
Release & Operations
‘Agile’ team
Centralised QA IT Operations
Integration & QA
Customer
The ‘last mile’Iteration 0 - 1 - 2 - 3 - n
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4
Test & Showcase
Delivery team
Customer
Constant flow of new features into production
PRINCIPLES OF CD
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6
Decouple release from deployment
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Done means released
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Small releases
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Build quality in
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If it hurts, do it more often
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Automate everything
BENEFITS OF CD
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Clarity
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Confidence
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Less stress
SHOW ME HOWBlah blah blah. How do we actually do this?
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AUTOMATE EVERYTHINGThe machinery to put code in production. All the time.
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Automated testing
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Production-like environments
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Automated deployments
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Automated infrastructure
BUILD PIPELINEThe production gauntlet
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Trigger the pipe on every change
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Fast feedback
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Build artefact
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The go button
TRUNK BASED DEVELOPMENTHow to code when everything is in production
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Put everyone’s changes together all the time
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Small changes
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User stories
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Keep out of reach of users
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Feature toggles
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Toggling tips
not too many short lived talk about them
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Branch by abstraction
WHAT GOES INThe other side of the pipe
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Release decisions
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Use feedback
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Measure cycle time
RECAPOnce more with feeling
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The last mile
Principles of CDBenefits
automate everything
build pipelinetrunk based dev
what goes in
How?
SOME RESOURCES
Continuous Integration:
• www.martinfowler.com/articles/continuousIntegration.html
• http://martinfowler.com/bliki/FeatureBranch.html
Trunk based development:
• http://martinfowler.com/bliki/FeatureToggle.html
• http://martinfowler.com/bliki/BranchByAbstraction.html
• http://continuousdelivery.com/wp-content/uploads/2011/05/branch_by_abstraction.png
Continuous Delivery
• http://www.thoughtworks.com/continuous-delivery
• http://martinfowler.com/bliki/ContinuousDelivery.html
• http://go.cd
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SOME RESOURCES
Jez Humble (@jezhumble)
• continuousdelivery.com
• CD Book: http://martinfowler.com/books/continuousDelivery.html
• Video on adopting CD: http://www.infoq.com/presentations/Adopting-Continuous-Delivery
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a n i n t r o t o c o n t i n u o u s d e l i v e r y
LET’S RELEASE IT
Rouan Wilsenach @rouanw
thoughtworks.com
