The document discusses Netflix's transition from a monolithic Java application running on Oracle databases to microservices using multiple languages like Java, Python, and JavaScript. It describes how Netflix developed NEWT (Netflix Workflow Toolkit) to provide a consistent development experience for all languages. NEWT simplifies tasks like packaging, building, and deploying through commands that isolate tool environments and versions. This unified approach reduced complexity when adopting new languages and allowed Netflix to treat applications similarly regardless of the underlying technology.

1. BetterDevExatNetflix
PolyglotandContainersMike McGarr
@SonOfGarr
© J. Michael McGarr, 2018

2. © J. Michael McGarr, 2018

3. © J. Michael McGarr, 2018

4. Datacenter
Monolithic Java application
Oracle database
© J. Michael McGarr, 2018

5. AWS
Java microservices
NoSQL
© J. Michael McGarr, 2018

6. A Java shop
© J. Michael McGarr, 2018

7. BetterDevExatNetflix
PolyglotandContainersMike McGarr
@SonOfGarr
© J. Michael McGarr, 2018

8. JavaatNetflix© J. Michael McGarr, 2018

9. SupportingJava
© J. Michael McGarr, 2018

10. SupportingJava
· Developer Tools
© J. Michael McGarr, 2018

11. SupportingJava
· Developer Tools
· Build and CI
© J. Michael McGarr, 2018

12. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
© J. Michael McGarr, 2018

13. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
© J. Michael McGarr, 2018

14. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
· Cloud Security
© J. Michael McGarr, 2018

15. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
· Cloud Security
· Performance Engineering
© J. Michael McGarr, 2018

16. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
· Cloud Security
· Performance Engineering
· Cloud Data Engineering
© J. Michael McGarr, 2018

17. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
· Cloud Security
· Performance Engineering
· Cloud Data Engineering
· Demand Engineering
© J. Michael McGarr, 2018

18. SupportingJava
· Developer Tools
· Build and CI
· Runtime platform
· Insight Engineering
· Cloud Security
· Performance Engineering
· Cloud Data Engineering
· Demand Engineering
· Reliability Engineering
© J. Michael McGarr, 2018

19. Build and deployment
© J. Michael McGarr, 2018

20. HowdoNetflixengineerspushcode?
© J. Michael McGarr, 2018

21. HowdoNetflixengineerspushcode?
1. Build (w/ Gradle)
© J. Michael McGarr, 2018

22. HowdoNetflixengineerspushcode?
1. Build (w/ Gradle)
2. Bake (immutable servers)
© J. Michael McGarr, 2018

23. HowdoNetflixengineerspushcode?
1. Build (w/ Gradle)
2. Bake (immutable servers)
3. Deploy (w/ Spinnaker)
© J. Michael McGarr, 2018

24. thePavedRoad
© J. Michael McGarr, 2018

25. NebulaOspackage
Package your Java application
as a .deb or .rpm
© J. Michael McGarr, 2018

26. © J. Michael McGarr, 2018

27. © J. Michael McGarr, 2018

28. Non-JavaatNetflix
© J. Michael McGarr, 2018

29. Non-Javalanguagegrowthrose2014
© J. Michael McGarr, 2018

30. PythonandJavaScript
© J. Michael McGarr, 2018

31. Node.jsapp
produce a .deb
© J. Michael McGarr, 2018

32. Thisworksright?
© J. Michael McGarr, 2018

33. Really!? I have to use
Gradle for Node.js?
© J. Michael McGarr, 2018

34. Yes. We are a Java shop.
© J. Michael McGarr, 2018

35. © J. Michael McGarr, 2018

36. tipping point
© J. Michael McGarr, 2018

37. Produce
Node.js .debs
using Native tools
© J. Michael McGarr, 2018

38. Nebula for Node.js
© J. Michael McGarr, 2018

39. © J. Michael McGarr, 2018

40. Build tool
© J. Michael McGarr, 2018

41. Build tool
Developer workflow tool
© J. Michael McGarr, 2018

42. Language agnostic
© J. Michael McGarr, 2018

43. Native (or native-like)
© J. Michael McGarr, 2018

44. reduce cognitive load
© J. Michael McGarr, 2018

45. NEWT
(Netflix Workflow Toolkit)
© J. Michael McGarr, 2018

46. Golang
© J. Michael McGarr, 2018

47. Newt for node.js
© J. Michael McGarr, 2018

48. Problem # 1:
Simplify Node.js debian packaging
© J. Michael McGarr, 2018

49. newt package
© J. Michael McGarr, 2018

50. Gradle/Java hidden in a Docker container
© J. Michael McGarr, 2018

51. Node.js developers don't install Java/Gradle
© J. Michael McGarr, 2018

52. Problem # 2:
Now I need Docker?
© J. Michael McGarr, 2018

53. Install & configure
tools per execution
© J. Michael McGarr, 2018

54. Provide consistency throughout
© J. Michael McGarr, 2018

55. Problem # 3:
I still need to build!
© J. Michael McGarr, 2018

56. newt build
© J. Michael McGarr, 2018

57. Runs package.json build
script:
npm install &&
eslint src/** &&
npm test
© J. Michael McGarr, 2018

58. Problem #4:
Keep NPM/Nodejs versions consistent
© J. Michael McGarr, 2018

59. definetoolversions
© J. Michael McGarr, 2018

60. newt exec
© J. Michael McGarr, 2018

61. newt exec npmvs.npm
© J. Michael McGarr, 2018

62. So now I need to type
newt exec npm
everytime?
© J. Michael McGarr, 2018

63. alias npm="newt exec npm --"
© J. Michael McGarr, 2018

64. © J. Michael McGarr, 2018

65. Whathavewegained?
© J. Michael McGarr, 2018

66. Whathavewegained?
· Simplified packaging for all languages
© J. Michael McGarr, 2018

67. Whathavewegained?
· Simplified packaging for all languages
· Tooling consistency
© J. Michael McGarr, 2018

68. Whathavewegained?
· Simplified packaging for all languages
· Tooling consistency
· Tool environment isolation
© J. Michael McGarr, 2018

69. Whathavewegained?
· Simplified packaging for all languages
· Tooling consistency
· Tool environment isolation
· Agnostic to build tools
© J. Michael McGarr, 2018

70. Unlocking
Hiddenpotential© J. Michael McGarr, 2018

71. We want homogenous apps
© J. Michael McGarr, 2018

72. app-types
© J. Michael McGarr, 2018

73. app types
© J. Michael McGarr, 2018

74. © J. Michael McGarr, 2018

75. © J. Michael McGarr, 2018

76. configurable commands
© J. Michael McGarr, 2018

77. enablement through inter-sourcing
© J. Michael McGarr, 2018

78. © J. Michael McGarr, 2018

79. better documentation?
© J. Michael McGarr, 2018

80. Developer friendly docs
newt init --app-type
doc-site
© J. Michael McGarr, 2018

81. Development ecosystem complexity
© J. Michael McGarr, 2018

82. Ecosystemawareness
© J. Michael McGarr, 2018

83. Ecosystemawareness
· newt spinnaker start
© J. Michael McGarr, 2018

84. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
© J. Michael McGarr, 2018

85. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
© J. Michael McGarr, 2018

86. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
· newt ci list
© J. Michael McGarr, 2018

87. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
· newt ci list
· newt ci start
© J. Michael McGarr, 2018

88. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
· newt ci list
· newt ci start
· newt ci stop
© J. Michael McGarr, 2018

89. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
· newt ci list
· newt ci start
· newt ci stop
· newt ci tail
© J. Michael McGarr, 2018

90. Ecosystemawareness
· newt spinnaker start
· newt spinnaker browse
· newt ci history
· newt ci list
· newt ci start
· newt ci stop
· newt ci tail
· newt ci browse
© J. Michael McGarr, 2018

91. oh yeah...support
© J. Michael McGarr, 2018

92. $ newt report-error
© J. Michael McGarr, 2018

93. Newt is a tool platform
© J. Michael McGarr, 2018

94. Titus
© J. Michael McGarr, 2018

95. Whatwelearned?
© J. Michael McGarr, 2018

96. Whatwelearned?
© J. Michael McGarr, 2018

97. Whatwelearned?
· Polyglot can be expensive
© J. Michael McGarr, 2018

98. Whatwelearned?
· Polyglot can be expensive
· Containers make for great tool distribution
© J. Michael McGarr, 2018

99. Whatwelearned?
· Polyglot can be expensive
· Containers make for great tool distribution
· Build platforms, not just tools
© J. Michael McGarr, 2018

100. Whatwelearned?
· Polyglot can be expensive
· Containers make for great tool distribution
· Build platforms, not just tools
· Provide native solutions (or native-like)
© J. Michael McGarr, 2018

101. Whatwelearned?
· Polyglot can be expensive
· Containers make for great tool distribution
· Build platforms, not just tools
· Provide native solutions (or native-like)
· Reduce cognitive load
© J. Michael McGarr, 2018

102. Thankyou!Mike McGarr (@SonOfGarr)
© J. Michael McGarr, 2018