Continuous Deployment Demystified

1. Continuous Deployment Embrace Continuous Improvement Naresh Jain @nashjain naresh@agilefaqs.com http://blogs.agilefaqs.com Licensed Under Creative Commons by Naresh Jain 1

2. Licensed Under Creative Commons by Naresh Jain 2

4. Continuous Deployment Licensed Under Creative Commons by Naresh Jain 3

5. But.... Licensed Under Creative Commons by Naresh Jain 4

6. re nt! diffe re us? ? Too e a or W F h ere mu em ch probl Ch re a aos he Wh o? W ? Is t hen ? ROI? Pro duc tivit y? Licensed Under Creative Commons by Naresh Jain 4

7. Me Licensed Under Creative Commons by Naresh Jain 5

9. Mumbai Licensed Under Creative Commons by Naresh Jain 7

10. AgilePhilly Tech Talks! Licensed Under Creative Commons by Naresh Jain 8

11. FitNesse Panopticode ProTest DBFit FitDecorator ProFIT La"u Patang QWick Licensed Under Creative Commons by Naresh Jain 9

18. Back in the Stone-age Licensed Under Creative Commons by Naresh Jain 16

19. Happiness/Excitement Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

20. Plan Happiness/Excitement Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

21. Plan Design Happiness/Excitement Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

22. Plan Design Happiness/Excitement Distribute Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

23. Plan Design Happiness/Excitement Distribute Work in Isolation Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

24. Plan Design Happiness/Excitement Distribute Work in Isolation Integrate Time/Money/Opportunity Cost Licensed Under Creative Commons by Naresh Jain 17

25. Last Minute Integration Surprises Licensed Under Creative Commons by Naresh Jain 18

26. BAD things were visible too Late... Licensed Under Creative Commons by Naresh Jain 19

27. Birth of CI Licensed Under Creative Commons by Naresh Jain 20

29. CI Helped Us Learn That... Life can Suck a lot Less! Licensed Under Creative Commons by Naresh Jain 22

30. CI Helped Us Learn That... Life can Suck a lot Less! Collaboration Feedback Quality Delivery Time Wastage Licensed Under Creative Commons by Naresh Jain 22

31. If people are afraid to check-in frequently... your CI process is NOT working. Licensed Under Creative Commons by Naresh Jain 23

32. We already do CI. What’s next? Licensed Under Creative Commons by Naresh Jain 24

33. Multi-Stage CI Process Scaling CI using Build Promotion Licensed Under Creative Commons by Naresh Jain 25

35. While the Lean-Start-up Community They tried something quite disruptive... Licensed Under Creative Commons by Naresh Jain 27

36. Continuous Deployment (CD) Licensed Under Creative Commons by Naresh Jain 28

37. CD is quite natural for companies delivering content via Web Licensed Under Creative Commons by Naresh Jain 29

38. Freeset - In Business for Freedom Licensed Under Creative Commons by Naresh Jain 30

39. Stage 1 Static Files DB freesetglobal.com s Vie te da w Up Freeset - In Business for Freedom Licensed Under Creative Commons by Naresh Jain 30

40. Stage 1 Stage 2 Static Static Static Files Files Files DB DB DB Structural Changes Sync freesetglobal.com dev.freesetglobal.com freesetglobal.com s Updates Vie te View da w Up ck li -C oy le pl ng De Si Freeset - In Business for Freedom Licensed Under Creative Commons by Naresh Jain 30

41. Freeset Demo Licensed Under Creative Commons by Naresh Jain 31

42. Beneﬁts of CD Licensed Under Creative Commons by Naresh Jain 32

43. Automation removes Errors Licensed Under Creative Commons by Naresh Jain 33

44. Eliminates stressful release crunch Licensed Under Creative Commons by Naresh Jain 34

45. Users continuously see improvements Licensed Under Creative Commons by Naresh Jain 35

46. Reducing batch size helps drive out waste Licensed Under Creative Commons by Naresh Jain 36

47. Faster responses to customer issues Licensed Under Creative Commons by Naresh Jain 37

48. A/B testing is easier due to less release overhead Licensed Under Creative Commons by Naresh Jain 38

49. Encourages experimenting with new ideas Licensed Under Creative Commons by Naresh Jain 39

50. Allows for ﬁne-grained monitoring of changes Licensed Under Creative Commons by Naresh Jain 40

51. Provides satisfaction from seeing constant progress Licensed Under Creative Commons by Naresh Jain 41

52. Can we embrace CD for eLearning? Rich Multi-Media Content Video, Screencasts, Quizzes, Images, Personas, etc. Programming Exercises Java, C#, C++, C & Python Mac OS, Windows, Linux, Solaris Different IDE Plugins Server side code analysis (Java, C#, C++, C & Python) Licensed Under Creative Commons by Naresh Jain 42

53. This is what we did... Licensed Under Creative Commons by Naresh Jain 43

54. Deploy build to inactive production servers Licensed Under Creative Commons by Naresh Jain 44

55. Inactive joins the cluster Licensed Under Creative Commons by Naresh Jain 45

56. Delivery tests verify inactive release Licensed Under Creative Commons by Naresh Jain 46

57. Reverse proxy swaps inactive with active Licensed Under Creative Commons by Naresh Jain 47

59. CD Requires Zero Downtime Licensed Under Creative Commons by Naresh Jain 49

60. Zero Downtime Requires Performing updates without interrupting users is essential for Zero Downtime deployments. • The application code • Database schema • Data ﬁles • Web Server • Application Server or Servlet Container • Database Server • OS upgrades and patches Licensed Under Creative Commons by Naresh Jain 50

61. What about DB Upgrades? Will Continuous Deployment work? Licensed Under Creative Commons by Naresh Jain 51

62. Hibernate • hbm2ddl.auto = update • Rarely we need to go in and update DB manually Licensed Under Creative Commons by Naresh Jain 52

63. Zero-downtime DB Updates 012_rename_login_id_to_user_name 012_add_user_name_column 02_remove_login_id_column expansion contraction Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 53

64. Zero-downtime DB Updates Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 54

65. Zero-downtime DB Updates • expansion Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 54

66. Zero-downtime DB Updates • expansion • preserves backwards compatibility Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 54

67. Zero-downtime DB Updates • expansion • preserves backwards compatibility • contract Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 54

68. Zero-downtime DB Updates • expansion • preserves backwards compatibility • contract • clean up Src: Owen Rogers http://exortech.com/blog/ Licensed Under Creative Commons by Naresh Jain 54

69. Industrial Logic’s eLearning CD Demo Licensed Under Creative Commons by Naresh Jain 55

70. Eventually... Licensed Under Creative Commons by Naresh Jain 56

71. CD’s Impact on Team Culture Licensed Under Creative Commons by Naresh Jain 57

72. Encourage Evolutionary Design and Continuous Improvement culture Licensed Under Creative Commons by Naresh Jain 58

73. Breaks work into micro-pieces, thereby enabling micro-deliveries Licensed Under Creative Commons by Naresh Jain 59

74. Limited Work In Progress Licensed Under Creative Commons by Naresh Jain 60

75. Knows when to hide or reveal work in progress Licensed Under Creative Commons by Naresh Jain 61

76. Team takes shared ownership of the entire software development lifecycle Licensed Under Creative Commons by Naresh Jain 62

77. The product is in a always-working-state No developer is blocked because they can't get stable code Licensed Under Creative Commons by Naresh Jain 63

78. Stop the Line Culture Team catches issues at the source and avoid last minute integration and deployment nightmares Licensed Under Creative Commons by Naresh Jain 64

79. Team crave for rapid feedback Licensed Under Creative Commons by Naresh Jain 65

80. Complete Traceability Version Control, Project & Requirements Managements tool, Bug Tracking and Build system are completely integrated Licensed Under Creative Commons by Naresh Jain 66

81. Questions? Naresh Jain @nashjain naresh@agilefaqs.com http://blogs.agilefaqs.com Licensed Under Creative Commons by Naresh Jain 67

Continuous Deployment Demystified

Continuous Deployment Demystified

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Continuous Deployment Demystified