Continuous delivery its not about the technology, its about the people.

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Continuous delivery its not about the technology, its about the people.

  1. 1. Continuous Delivery Its not about the technology its about the people.
  2. 2. Tomas Riha Architect @ VGT/WirelessCar MAJOR Project Liability Passionate about creativity, change and improvement Horrible at following instructions and performing repetitive tasks mail: triha74@gmail.com twitter: @TomasRihaSE blog: continuous-delivery-and-more.blogspot.com
  3. 3. Three Years ago New Plattform Multiple Stakeholders Continuous Regression Testing How hard can it be?
  4. 4. Regression Test Unit Testing Component Testing System Testing Rollback/Compatibility Testing Failover Testing Performance Testing
  5. 5. Continuous Delivery Build, release, deploy and test every check in. Build Release Deploy Test
  6. 6. Continuous Delivery Principles The process MUST be repeatable and reliable Automate everything If somethings difficult or painful, do it more often Keep everything in source control Done means “released” Build quality in! Everybody has responsibility for the release process Improve continuously
  7. 7. At first it was super easy! Small team of just product owner architect and scrum master. Huge productivity, natural test driven development. Fast return on investment All by the book.... we were doing Continuous Delivery!
  8. 8. Then we tried to scale it... ... and we failed in every possible way. We lost our test driven development We lost the individual responsibility We more or less became a automated waterfall unable to delivery daily
  9. 9. Continuous Delivery changes our behaviour Changing the behaviour of 5 people is easy. Changing the behaviour of 50 is super hard. You have to understand the changes!
  10. 10. Lets look at the roles and how they change Developer Tester PM/Scrum Masters Product Owner Operations Organization
  11. 11. Developers Everything has to work all the time! Pre Planning Dev Sys Test Reg Test Pre Planning Dev Sys Test Reg Test In traditional scrummerfall projects system only works once every iteration. No one cares if you check in a something before lunch just to “save” your work. Sprint
  12. 12. Developers Pre Planning Dev Test Automation Reg Test Thats an awful lot of testing... YES! Test driven development requires that developers work with testing. Pre Planning Reg Test Reg Test Verification Verification Test Driven Development
  13. 13. Developers Pre Planning Dev Test Automation Reg Test This creates context switching but its up to the developer to step it up! Pre Planning Reg Test Reg Test Verification Verification Regression has priority! ALWAYS!
  14. 14. Developers Developers hate branches, or so they say Hate merging because it mixes their code with others Love feature branches because they don't have to integrate their work Developers LOVE BRANCHES!! Continuous Delivery is done on the trunk.
  15. 15. Developers Developers need to take more responsibility for Regression test Writing test code Testing the system Integrating their code In order to always have a working system Need to take more responsibility
  16. 16. Developers So its its just up to the developers to shape up? The Continuous Delivery process needs to provide visibility and traceability to provide means to take responsibility. Developers need to be coached to increase responsibility and to mitigate fear.
  17. 17. Testers When we scaled up we added testers Developers were happy because they could go back to handing over code for testing. Adding testers we lost all test driven development!!!
  18. 18. Testers Agreement is key Finding bugs is not the goal of testing. Ensure we build the right application. Testing has to be done on a black box. Never verify on system files, databases or code. Verify on interfaces. Build quality in.
  19. 19. Testers Pre Planning Dev Sys Test Reg Test Pre Planning Dev Sys Test Reg Test Sprint A tester is a tester is a tester Manual System & Regression Testing is a reactive repetitive task.
  20. 20. Testers Pre Planning Dev Test Automation Reg Test TDD is not testing its requirement verification. Not all testers are suited to do requirement verification! Pre Planning Reg Test Reg Test Verification Verification Test Drive Development is proactive!
  21. 21. Testers Pre Planning Dev Test Automation Reg Test Automating the requirement verification is a technical task. Not all testers are suited to do automation as its too technical! Pre Planning Reg Test Reg Test Verification Verification Test Drive Development is also technical!
  22. 22. Testers Changed how we look on Tester Profession Requirement Verification usually done by BAs/Testers/Architects Test Case Automation usually done by Developers Regression Suite Management usually done by Testers
  23. 23. Testers Our most sought after profile Testers with strong technical skills Developers with strong testing skills Be either and earn $$$$
  24. 24. Testers Managing the change to the tester profession. Developers have an expanded role Testers have a changed role which is much harder to manage Testers must let developers test
  25. 25. Project Management Pre Planning Dev Sys Test Reg Test Pre Planning Dev Sys Test Reg Test Sprint Scrum really doesn't fit all that well Scrum builds up to a end of sprint release, but why not release daily?
  26. 26. Project Management Kanban inspired feature development better fit Building and releasing one feature “at the time” is a much better fit. Feature cycle Pre Planning Dev Test Automation Pre Planning Verification Verification Pre Planning Dev Test Automation Pre Planning Verification Verification Feature cycle
  27. 27. Project Management What is included in the release??? Continuous Delivery process needs to provide reporting and release notes. Visibility of feature completion is extremely important. Feature cycle Pre Planning Dev Test Automation Pre Planning Verification Verification Pre Planning Dev Test Automation Pre Planning Verification Verification Feature cycle
  28. 28. Product Owners Want just what they ask for nothing else. Are extremly scared for half finished features. Shared bug fixes are ok but not shared features. Product Owners love branches
  29. 29. Operations In the long run DevOps is a must! Infrastructure needs to be versioned, dependency managed and deployed with application using same mechanisms in all environments Operations & Infrastructure architecture needs to be part of development
  30. 30. Organisation Buy in from Organization is a must Continuous Delivery affects entire organization. Continuous Delivery CHANGES the organization and the individuals within it.
  31. 31. Thats it! Feedback & Any questions you forgot to ask? http://continuous-delivery-and-more.blogspot.se or at the Bar!

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