ARCHITECTING FOR CONTINUOUS DELIVERY Patrick Kua (@patkua) 1
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ARCHITECTING FOR CONTINUOUS DELIVERYPatrick Kua (@patkua)
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About Me
@patkua
About Me
@patkua
wrote
http://tiny.cc/twtlhttp://tiny.cc/retros
About Me
@patkua
works for
About Me
People who work with
About Me
People who work with
wrote the book on
OUR AGENDA
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What is CD (briefly)
Architectural Principles
Case Study
Challenges
WHAT IS CONTINUOUS DELIVERY?
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WHAT IS CONTINUOUS DELIVERY?
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WHAT IS CONTINUOUS DELIVERY?
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WHAT IS CONTINUOUS DELIVERY?
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WHAT IS CONTINUOUS DELIVERY?
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WHAT IS CONTINUOUS DELIVERY?
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“Our highest priority is to satisfy the customer through early and
continuous delivery of valuable software.”
WHAT IS CONTINUOUS DELIVERY?
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The capability to reliably release software to
production on demand
(with confidence)
WHAT IS CONTINUOUS DELIVERY?
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Continuous Integration
Releasable Artefact
Continuous Deployment
Automatic releases
Continuous Delivery
Releases on demand
BUT HOW?
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PRINCIPLES
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PRINCIPLES
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The one law to rule them all…
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The one law to rule them all…
CONWAY’S LAW
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The one law to rule them all…
CONWAY’S LAW
“organizations which design systems ... are constrained to produce designs which are copies
of the communication structures of these organizations"
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“If you have 4 groups working on a compiler, you’ll get a 4-pass compiler”
Eric Raymond - Hacker’s Bible, 1996
CONWAY’S LAW IN ACTION
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CONWAY’S LAW
REAL LIFE EXAMPLES
Production
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Development
Production
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Development
Tooling
Culture
Incentives
A divide in:
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- Werner Voegls (Amazon)
“You build it, you run it”
PRINCIPLES
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The one law to rule them all…-ilities that matter
*ilities that matter
Automatability
Configurability
Testability
Deployability
Evolvability
Monitorability
*ilities that matter
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AUTOMATE
ALL THE THINGS
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Architect for testability
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“Fear is the path to the dark side. Fear leads to anger. Anger leads to hate. Hate leads to suffering.” - Yoda
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Y-U-NO DEPLOY?
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Architect for Configurability
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Architect for Monitorability
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Architect for Evolvability
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Evolutionary Architecture
Technology Radar
Jan 2010
Aug 2010
Jan 2011
Jul 2011
Mar 2012
Assess
Trial
Trial
Adopt
Adopt
PRINCIPLES
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The one law to rule them all…-ilities that matterIterate
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Post Release 1
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Reality
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Things go wrong
CASE STUDY: CLIENT
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16+ programme
streams
4 Product Owners
Constraints
What we did
The result
CASE STUDY: HP
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2008
1 or 2 builds per year
Porting code
Manual Testing
Production Support
Detailed Planning
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Common codebase
Automated testing
Stop the line
Architecture change
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2011
10-15 builds per day
Automated test maintenanceNew automated tests1 master + 1 branch
Who is doing Continuous Delivery?
CHALLENGES
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Production
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Development
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Snowflake servers
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Investment
Mindset
CONCLUSION
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QUESTIONS@patkua
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