Slides from my Jfokus 2014 talk about Continuous Delivery and Zero Downtime

1. Continuous Delivery
and Zero Downtime
AXEL FONTAINE
@axelfontaine
axelfontaine.com
Entrepreneur - Public Speaker - Continuous Delivery Expert

2. photon
flywaydb.org
getphoton.com
AXEL FONTAINE
@axelfontaine
axelfontaine.com
Entrepreneur - Public Speaker - Continuous Delivery Expert

3. about
questions

4. Fully automated deployment
of a complete application
into production
multiple times a day
with zero downtime
GOAL

5. Putting
things
into
PERSPECTIVE

6. http://digitalcitizen.ca/2009/06/22/simpsons-profile-pics-for-facebook-and-other-applications/

9. CONTINUOUS
DELIVERY
http://www.flickr.com/photos/kamshots/3096111340/

14. stackoverflow.com

15. stackoverflow.com

16. stackoverflow.com

17. stackoverflow.com

18. Prerequisites

19. Process
http://www.flickr.com/photos/feffef/460299390/in/photostream/

20. Process
http://www.flickr.com/photos/feffef/460299390/in/photostream/

21. Build

22. Build

23. Version Control

24. Version Control

25. Test
http://www.flickr.com/photos/vitorcastillo/2994723741/

26. Test
http://www.flickr.com/photos/vitorcastillo/2994723741/

27. DEV
Build
Small
Tests

28. DEV
Build
Small
Tests
Medium
Tests

29. DEV
Build
Small
Tests
Medium
Tests
Large
Tests

30. Continuous
Integration
DEV
Build
Version
Control
Build
Small
Tests
Small
Tests
Medium
Tests
Medium
Tests
Large
Tests
Large
Tests

31. DEPLOYMENT
automation
http://www.flickr.com/photos/soldiersmediacenter/3650607959/

32. do
NOT
deploy
SNAPSHOTS !

33. Continuous
Integration
DEV
Build
Version
Control
Build
Small
Tests
Small
Tests
Medium
Tests
Medium
Tests
Large
Tests
Large
Tests
Release
Artifact
Repository

34. What gets deployed?
Code
Configuration
DB Delta

35. Code
Deployment
Package

37. backup
stop
install
start
…
Deployment
Script
Code
Deployment
Package

38. backup
stop
install
start
…
Deployment
Script
Code
Deployment
Package

39. Continuous
Integration
Target
backup
stop
install
start
…
Release
Artifact
Repository
Deployment
Script

40. Configuration
Maybe it could
change one day
Code
≠ Environments
Deployment
Package

41. Environment
Detection
?
Code
Deployment
Package

42. Environment
Detection
Test
Code
AutoConfiguration

43. Continuous
Integration
Target
backup
stop
install
start
…
Release
Artifact
Repository
Deployment
Script

44. DB Delta

45. The Fear
of
DDL

47. VS
DML
DDL

48. Name
Balance
Homer
163
Marge
214
Bart
9
Lisa
25

49. Name
Balance
Name
Homer
0
Homer
Marge
0
Bart
0
Lisa
0
DML
VS
Marge
Bart
Lisa
DDL

50. DB Delta
Code
Deployment
Package

51. ?
Code
?
Deployment
Package
DB

52. flywaydb.org

53. Continuous
Integration
Target
backup
stop
install
start
…
Release
Artifact
Repository
Deployment
Script

54. MailService
Registration

55. MailService
Registration

56. MailService
Registration
v2
ParcelService

57. Feature Toggles
Branch by Abstraction
MailService
Registration
ParcelService

58. Feature Toggles
Branch by Abstraction
MailService
Registration
ParcelService

59. DB

60. DB

61. DB

62. State Management
Blue/Green Deployments
DB

63. Surname
Last_Name
Surname
ALTER TABLE … RENAME COLUMN

64. Last_Name
Surname
Last_Name
Last_Name
ALTER TABLE …
DROP TRIGGER …
ADD COLUMN Last_Name
ALTER TABLE …
CREATE TRIGGER …
DROP COLUMN Surname
UPDATE … SET Last_Name = Surname

65. Last_Name
Last_Name
DROP TRIGGER …
ALTER TABLE …
DROP COLUMN Surname

66. Summary

67. DEV
Build
Target
Continuous
Integration
Version
Control
backup
stop
install
start
…
Build Release
Artifact
Repository
Small
Tests
Small
Tests
Medium
Tests
Medium
Tests
Large
Tests
Large
Tests
Deployment
Script

70. http://de.wikipedia.org/wiki/Datei:Yemen_Chameleon.jpg

75. One more thing

77. AXEL FONTAINE
Software Development Expert
@axelfontaine
axelfontaine.com
business@axelfontaine.com

78. Further reading:
http://axelfontaine.com/blog/final-nail.html
http://axelfontaine.com/blog/environment-detection.html
http://martinfowler.com/bliki/FeatureToggle.html
http://googletesting.blogspot.com/2010/12/test-sizes.html
http://blog.shinetech.com/2012/12/18/simple-session-sharing-intomcat-cluster-using-the-session-in-cookie-pattern/