1. This document contains notes from a presentation by Sho Yokoyama on XP 2017. It includes topics like Web APIs, Solr, testing practices, and refactoring code. 2. The presentation discussed migrating a system with over 50 tables and 100,000 columns to use Web APIs and Solr. It also covered testing with practices like test-driven development and pair programming. 3. Additional sections provided examples of refactoring code for readability and maintainability, including separating view and controller code, using common classes, and improving documentation.

1.
2017-09-16 (Sat)
XP 2017
presented by @yuzutas0

2. Sho Yokoyama @yuzutas0
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3.
↓
↓

4. 19 10
4 120 2.8
1 1 x

5. ●
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→

6. 1.
2.
3.
4.
5.

7. 1.
2.
3.
4.
5.

9. ↓
↓
PDS

10. AP

11. AP

12. AP

13. WebAPI

14. 19

15. WebAPI
50+ 3500+ tables
100,000+ columns
‘00 SEO

17.
→ WebAPI → Solr

18. 1 1

19. 6 / 27

20. Blocker
❌

21. 1.
2.
3.
4.
5.

24. ●
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26. ● Excel
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27. ● Excel
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28. ● TODO
“ ” “ ”
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29. → KISS →
“.txt” for Lean
×
=
×
=
WIP
TODO
TODO
TODOTODOTODO

31. ● 19
● 1
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32. ●
● 1 1-2
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33. ● 1
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Go
Yes
No

34. ● →
● 1 “ ” “ ”
0.5 1 2 …
● 1
0.5 1 2 3 5 8

35. ●
● 1
1 2 4
2 → 3 6 1
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36. “ ” 1 / 4
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● TODO - 1 20

37. “ ” 2 / 4
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38. =
“ ” 3 / 4
API
→

39. - Done
“ ” 4 / 4
API 1

41. ● 1
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2 / 120
-
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42. Before
After 1
60min → 5min
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43.
↓
“ ”
↓
” ”

44. ●
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45. PullPull

46. 1

47. 19

48. WEB
→
+α →

49. 19 10
4 120 2.8
1 1 x

50. ●
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→

51. 1.
2.
3.
4.
5.

52. WebAPI
1
1

53. ● 3
3
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54. TDD
-
PullRED GREEN

55. TDD
-
PullRED GREEN

56.
No

57.
No

58. → 30
● Solr
● Apache
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●

59. ● 1
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60. ●
●

61. - …… ……
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● →

62. TDD
-
PullRED GREEN

63. → No
→

64. → No
→

65. → No
→

66. ……
→ No
→

67. 1 →
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68. 1 →
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69. →
● JMeter
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● HTTP
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70. TDD
-
PullRED GREEN

71. ●
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72. ● →
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73. 1on1
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● 30 1on1

74. →
Q1. by

75. Q2. by
→ 1 by
→

76. Q3. by
→ by
→

77. TDD
-
PullRED GREEN

78. ● 3
3
●

80. “ ” “ ”
↓
↓
↓

82. 19 10
4 120 2.8
1 1 x

83. ●
●
→

84. 1.
2.
3.
4.
5.

85. 50+ 3500+ tables
100,000+ columns

86. “ ” “ ”

87. -
Git / Gitlab
SonarQube

88. 📚
🚜
🎨

89. 📚 API
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● JSON Swagger
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90. 📚
● Excel
if return
● Excel
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●
if …
if …
if …
return;
else if …
if …
return;
# validation
if …
return;
# main logic
……
……
No
Docs

91. 📚

92. 📚
🚜
🎨

93. 🚜
→ API OK
WEB

94. 🚜 NG
WEB
↓

95. 🚜
●
●
View
View
View
Controller
Controller
Controller
Model

96. 🚜
AB
private xxx testAB(Hoge hoge) {
……
}
public String mainController() {
……
testAB(hoge);
……
}

97. 🚜

98. 📚
🚜
🎨

99. 🎨 “ ”
↓
Better
↓

100. 🎨 “ ”
→ → →

101. 🎨
→
→ XX
→

102. 🎨
CommonClass →

103. “ ” “ ”

104. “ ”
→

105. 19 10
4 120 2.8
1 1 x

106. ●
●
→

107. 1.
2.
3.
4.
5.

108. 6 / 27

109. Blocker
❌

110. 43 / 43

112. x 7.16
6
43

113. 19 120 / 4

114. 2.8

115. 19 10
4 120 2.8
1 1 x

116. 1/ 2
1.
2.
3.
1 1

117. 2 / 2
↓

118. ●
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119. presented by @yuzutas0