Continuous Delivery Applied was presented at the DC Agile Engineering Conference on 12/7/2012 by Mike McGarr (@jmichaelmcgarr).

1. Continuous Delivery
Applied
Mike McGarr
jmcgarr@gmail.com
@jmichaelmcgarr
http://earlyandoften.wordpress.com
http://www.meetup.com/DC-continuous-integration/

2. About Me
• J. Michael (Mike) McGarr
• 11 years as an IT consultant
• Director of DevOps for Learn, Blackboard
• Founder of the DC Continuous Integration,
Delivery, and Deployment Meetup
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3. Continuous Delivery is…
…a set of practices and principles aimed at,
building, testing, and releasing software
faster and more frequently.
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4. 4

5. 5

6. “Our highest priority is to satisfy the
customer through early and
continuous delivery of valuable
software.”
- First of the Twelve
Principles behind the Agile Manifesto
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7. Quality or Speed
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8. Cycle Time
“How long would it take your organization to
deploy a change [to production] that involves
just one single line of code? Do you do this on a
repeatable, reliable basis?”
- Mary and Tom Poppendieck,
Implementing Lean Software Development
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9. The Last Mile
Manual Deployments
Insufficient Configuration Management
Infrequent, Error Prone Deployments
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10. Stressful
Releases
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11. Frequent Automated
Deployments
http://flic.kr/p/29Ree
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12. Always Production Ready
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13. Continuous Deployment
Deployment Pipelines
Deployment Automation
Configuration Continuous
Management
Testing
Integration
Agile
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14. Deployment Pipelines
http://www.fotopedia.com/users/chmehl 14

15. Deployment Pipelines
A Deployment Pipeline is an automated
manifestation of your process for getting
software from version control into the
hands of your users.
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16. Deployment Pipelines
(aka Build Pipelines)
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17. Continuous what?
Continuous Continuous Continuous
Integration Delivery Deployment
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18. Where do I start?

19. Understand your Process
http://www.michaelnygard.com/blog/2008/02/outrunning_your_headlights.html
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20. Understand your Organization
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21. Developers
http://flic.kr/p/5cK2
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22. Test Driven Development
http://reddevnews.com/articles/2007/11/01/testdriven-development-tdd.aspx 22

23. Evolutionary Design
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24. Automate the Build
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25. Static Code Analysis
CheckStyle
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26. Technical Debt
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27. The Team
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28. Agile
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29. Continuous Integration
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30. Continuous Integration
Check-in Daily
Commit to Trunk
Automate the Build
Keep the Build Fast
Every Commit results in Build
Test in Clone of Production
Automate Deployment
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31. Build Pipeline in Jenkins
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32. Testing
32

33. Types of Tests
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34. Test Strategy
Taken from Growing Object-Oriented Software, Guided by Tests
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35. Testing is not a Phase
http://flic.kr/p/6bcg 35

36. Specification by Example
36

37. Specification by Example
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38. Automated Performance Testing
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39. Configuration Management
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40. Version Control
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41. Build Once, Deploy Many
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42. Externalize Configuration
ESCAPE Database
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43. Artifact Repositories
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44. Traceability
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45. Versioning Numbers
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46. Branch by Abstraction
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47. Deploying
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48. Automated Deployments
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49. Code Deployments
1. Push New Binary to Server
2. Stop Server
3. Archive Old Binary
4. Deploy New Binary
5. Start Server
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50. Version your Database
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51. Database Deployments
HTML .sql
Production
DBA
DB
Change Test
DB
Version Build
Change
Control Server
DB Dev
Change
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52. 52

53. DevOps
http://www.agileweboperations.com/lean-agile-devops-related
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54. DevOps: it’s about culture
http://dev2ops.org/2012/10/devops-transformation-workshop-for-technical-managers/
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55. Infrastructure as Code
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56. Puppet
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57. Vagrant
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58. Monitoring (sucks)
https://github.com/monitoringsucks
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59. Continuous Deployment
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60. Contact Me
Mike McGarr
jmcgarr@gmail.com
@jmichaelmcgarr
http://earlyandoften.wordpress.com
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61. Further Reading
• Continuous Delivery: Reliable Software Releases through Build, Test
and Deployment Automation, by Jez Humble and David Farley -
http://www.amazon.com/Continuous-Delivery-Deployment-Automation-
Addison-Wesley/dp/0321601912
• Continuous Integration, By Paul M Duvall -
http://www.amazon.com/Continuous-Integration-Improving-Software-
Reducing/dp/0321336380
• Refactoring Databases, By Scott Ambler and Pramod Sadalage -
http://www.amazon.com/Refactoring-Databases-Evolutionary-
paperback-Addison-Wesley/dp/0321774515
• Refactoring, By Martin Fowler - http://www.amazon.com/Refactoring-
Improving-Design-Existing-Code/dp/0201485672
• Growing Object-Oriented Software, Guided by Tests, by Steven
Freeman and Nat Pryce - http://www.amazon.com/Growing-Object-
Oriented-Software-Guided-Tests/dp/0321503627
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62. Further Reading
• Extreme Programming Explained, by Kent Beck -
http://www.amazon.com/Extreme-Programming-Explained-Embrace-
Change/dp/0201616416
• Release It!, by Michael Nygard -
http://pragprog.com/book/mnee/release-it
• xUnit Test Patterns, by Gerard Meszaros -
http://www.amazon.com/xUnit-Test-Patterns-Refactoring-
Code/dp/0131495054
• Working Effectively with Legacy Code, by Michael Feathers -
http://www.amazon.com/Working-Effectively-Legacy-Michael-
Feathers/dp/0131177052
• Agile Testing, by Lisa Crispin and Janet Gregory -
http://www.amazon.com/Agile-Testing-Practical-Guide-
Testers/dp/0321534468
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63. Further Reading
• Test Driven Development (TDD) – http://en.wikipedia.org/wiki/Test-
driven_development
• Introducing BDD, by Dan North – http://dannorth.net/introducing-bdd/
• Agile Manifesto – http://agilemanifesto.org/
• Scrum – http://www.scrumalliance.org/learn_about_scrum
• Continuous Integration, by Martin Fowler –
http://martinfowler.com/articles/continuousIntegration.html
• Specification by Example, by Gojko Adzic -
http://specificationbyexample.com/
• Build Pipelines - http://www.magpiebrain.com/2009/12/13/a-brief-and-
incomplete-history-of-build-pipelines/
• Implementing Lean Software Development, by Mary and Tom
Poppendieck - http://www.amazon.com/Implementing-Lean-Software-
Development-Concept/dp/0321437381
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64. Further Reading
• Maven Releases on Steriods, by Axel Fontaine –
http://www.axelfontaine.com/2011/01/maven-releases-on-steroids-
adios.html
• What is in a Name? Usually a version number, actually., by James
Betteley - http://jamesbetteley.wordpress.com/2011/07/07/what-is-in-a-
name-usually-a-version-number-actually/
• Build Once, Deploy Many -
http://earlyandoften.wordpress.com/2010/09/09/build-once-deploy-
many/
• Evolutionary Design - http://martinfowler.com/articles/designDead.html
• Continuous Deployment -
http://timothyfitz.wordpress.com/2009/02/08/continuous-deployment/
• Sonar’s Technical Debt Calculation -
http://www.sonarsource.org/evaluate-your-technical-debt-with-sonar/
• Gherkin - https://github.com/cucumber/cucumber/wiki/Gherkin
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65. Further Reading
• Branch by Abstraction, by Paul Hammant
http://paulhammant.com/blog/branch_by_abstraction.html
• Making Large Scale Changes Incrementally with Branch by
Abstraction, by Jez Humble -
http://continuousdelivery.com/2011/05/make-large-scale-changes-
incrementally-with-branch-by-abstraction/
• What is DevOps?, by Damon Edwards -
http://dev2ops.org/2010/02/what-is-devops/
• Monitoring Sucks - https://github.com/monitoringsucks
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66. Tools
• Git - http://git-scm.com/
• Subversion - http://subversion.tigris.org/
• Mercurial - http://mercurial.selenic.com/
• Rational ClearCase - http://www-
01.ibm.com/software/awdtools/clearcase/
• Serena Dimensions CM - http://www.serena.com/products/dimensions-
cm/index.html
• Ant - http://ant.apache.org/
• Ivy - http://ant.apache.org/ivy/
• Maven - http://maven.apache.org/
• Gradle - http://gradle.org/
• JUnit – http://www.junit.org/
• Mockito – http://code.google.com/p/mockito/
• Hamcrest – http://code.google.com/p/hamcrest/
• Spock – http://code.google.com/p/spock/
• dbUnit – http://www.dbunit.org/
• Unitils – http://unitils.org/summary.html
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67. Tools
• Findbugs – http://findbugs.sourceforge.net/
• PMD – http://pmd.sourceforge.net/
• Checkstyle – http://checkstyle.sourceforge.net/
• JIRA – http://www.atlassian.com/software/jira/overview
• GitHub – https://github.com/
• Jenkins - http://jenkins-ci.org/
• TeamCity – http://www.jetbrains.com/teamcity/
• Nexus – http://www.sonatype.org/nexus/
• Artifactory – http://www.jfrog.com/products.php
• Sonar – http://www.sonarsource.org/
• FitNesse – http://fitnesse.org/
• Concordion – http://www.concordion.org/
• Cucumber – http://cukes.info/
• easyb – http://www.easyb.org/
• jBehave - http://jbehave.org/
• geb - http://www.gebish.org/
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68. Tools
• Liquibase – www.liquibase.org/
• Flyway – http://code.google.com/p/flyway/
• Escape – http://code.google.com/p/escservesconfig/
• Capistrano - https://github.com/capistrano/capistrano
• Deployinator - https://github.com/etsy/deployinator
• Puppet – http://puppetlabs.com/
• Chef – http://www.opscode.com/chef/
• Ansible - http://ansible.cc/
• Vagrant – http://vagrantup.com/
• JMeter – http://jmeter.apache.org/
• Nagios - http://www.nagios.org/
• Logstash - http://logstash.net/
• StatsD – https://github.com/etsy/statsd
• Metrics – http://metrics.codahale.com/
• Ganglia – http://ganglia.sourceforge.net/
• Graphite - http://graphite.wikidot.com/
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