Netto (nettofarah@gmail.com) and Vini's (vgomes@thoughtworks.com) presentation for the ThoughtWorks Brasil away day 2012.

1. Stop amazing.
Start working.

2. why?

3. l iver

4. we

7. the resources

8. the mission

9. find . -type f ( -name '*.css' -o -name '*.js' -o -
name '*.java' -o -name '*.jsp' -o -name '*.html' )
-print0 | xargs -0 cat | wc -l

10. find . -type f ( -name '*.css' -o -name '*.js' -o -
name '*.java' -o -name '*.jsp' -o -name '*.html' )
-print0 | xargs -0 cat | wc -l
558982
lines of code

11. grep -R ‘<bean’ . | wc -l

12. grep -R ‘<bean’ . | wc -l
684
spring beans

13. grep -R ‘class’ . | wc -l

14. grep -R ‘class’ . | wc -l
3096
java classes

15. grep -R ‘@Test’ . | wc -l

16. grep -R ‘@Test’ . | wc -l
1774
junit4 tests

17. grep -R ‘public void test’ . | wc -l

18. grep -R ‘public void test’ . | wc -l
1603
junit3 tests

19. our nice tech stack

20. integration
40 queues 157 fields 20 schemas
20 cores
~ 30
offline jobs
5 webservices

21. 104
integration points!

22. ~le tests

23. ~le tests
• 2777 junit tests

24. ~le tests
• 2777 junit tests
• 360 functional tests

25. ~le tests
• 2777 junit tests
• 360 functional tests
• ruby 1.8.6 (no bundler!)

26. ~le tests
• 2777 junit tests
• 360 functional tests
• ruby 1.8.6 (no bundler!)
• windows xp

27. ~le tests
• 2777 junit tests
• 360 functional tests
• ruby 1.8.6 (no bundler!)
• windows xp
• monkeypatches for IE/windows

28. ~le tests
• 2777 junit tests
• 360 functional tests
• ruby 1.8.6 (no bundler!)
• windows xp
• monkeypatches for IE/windows
• 4 hours build

29. teams

30. 4 teams
35 devs

31. 6 engineers

32. 6 managers

33. pigeons!

34. many of them

35. first story
product feed import

36. IHateYouForeverImpl
• 2272 lines
• 32 dependencies
• getItemStatus (3 setters)

37. IHateYouServiceImplTest
78 lines of test setup

38. loadAllProducts.xml
26 pages

39. ProductDTO.java
• 86 attributes
• + getters / + setters
• equals() => 400 lines

40. let’s throw it all away
and start from scratch!

43. ok!
let’s AMAZE this
codebase

44. pague o aluguel!

45. massive cleanup
• intensive refactoring
• pair programming
• rant! whining! crying!

46. 6 weeks later...

47. zoom++

48. fuuuu
• silly refactoring (speculative)
• bugs in prod

50. todos ‘chora’

51. todos ‘chora’
• little trust on the offshore team

52. todos ‘chora’
• little trust on the offshore team
• the project almost gets cancelled

53. todos ‘chora’
• little trust on the offshore team
• the project almost gets cancelled
• IM leaves

54. todos ‘chora’
• little trust on the offshore team
• the project almost gets cancelled
• IM leaves
• tech lead leaves

55. we were alone :’(

56. new approach

59. foca no trabalho!

60. purism must stop

61. right software
>
software right

62. is it worth refactoring?
• does it block another story?
• does it block delivery?

63. speculation
“this is going to impact on story #125 of
the next iteration”
facts x speculation
software is inherently fuzzy

64. legacy code is working code
http://favim.com/image/467371/

65. sweep it under the carpet
façades
parallel class hierarchy

66. tolerate heresy

68. reduce the feedback
cycle
is there anyone using it?

69. tools

70. feature
level MVPs

71. avoid the
formal sign-off

72. fantasy
architecture

73. what do they wanna
hear?

74. is it possible not to test?

75. divide and conquer

76. technical debt factories

77. in the end...

79. the client

80. is this success a
consequence of the
initial effort?

81. sim
mas não

82. here’s my number
nettofarah@gmail.com
@nettofarah
vgomes@thoughtworks.com
@vvgomes
so call me, maybe

83. thank you!