Video and slides synchronized, mp3 and slide download available at URL http://bit.ly/1MV0NZr. Russ Miles shows how we can build production-level confidence in our polyglot microservices by applying the test-driven approach to synchronous and asynchronous services and how by applying specific constraints to the system, testing not only can be successfully applied to the microservices themselves but this can be done simply, easily and can embrace speed of change rather than be an impediment. Filmed at qconlondon.com. Russ Miles is Lead Engineer at Atomist and Founder at Russ Miles & Associates. His experience covers almost every facet of software delivery having worked across many different domains including Financial Services, Publishing, Defence, Insurance and Search.

1. Test Driven Microservices
@russmiles
System Confidence through
Journeys,Traces & Contracts…

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http://www.infoq.com/presentations
/test-driven-microservices

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Presented at QCon London
www.qconlondon.com

5. Biker me… TBD

9. Reactive…
Say “Microservices” one more time…

10. TBD

12. A Definition…

13. The kingdom of heaven is like a mustard seed, which
a man took and planted in his field.Though it is the
smallest of all seeds, yet when it grows, it is the largest
of garden plants and becomes a tree, so that the birds
come and perch in its branches (Matthew 13:31-32).
- Of Mustard Seeds and Microservices (Micah
Blalock) -- https://www.credera.com/blog/technology-
insights/java/mustard-seeds-microservices/

14. “Loosely coupled service oriented
architecture with bounded contexts”

15. Loosely Coupled
Services that
can change

16. Which is GREAT!
but…

18. Testing in an
Uncertain World?

19. Confidence in an
Uncertain World

21. Testing the Pieces is
Good

22. But…

23. But

25. How to make sense?

26. Confidence,
Comprehension,
Intent

27. Across MANY
Microservices…

28. We have a tool for
that…

29. History…

30. story…

31. story…

32. Stories are powerful

33. Utnapishtim

34. Noah

35. Learning and
Comprehension
through Stories

36. Confidence,
Comprehension,
Intent

37. The problem?

38. Front-end Only sucks

39. Acceptance in
Microservices is Across
Pipeline

40. Introducing ‘Journeys’

41. Introducing
‘Pipeline Journeys’

42. Just expectation?

43. ‘Live too’

44. That’s all good but…

46. Change?

47. Even Drop-in
Replacement can be a
Challenge!?

48. But there’s worse…

49. Contract Change.

50. *?it Happens…

51. We need to deal!

52. Event Sourcing is Key!

53. Size
doesn’t matter

54. SLOC doesn’t matter

55. Cognitive Overhead
DOES

56. What can your System
DO?

57. WT*?!

60. The real problem?

61. The general problem…

63. d

64. do

65. bdo

66. S

67. Complexity
of
Microservices

69. We can do better

70. We can do much better

71. We have done this
before…

74. Simplify Enterprise Java

75. Simplify Microservices

76. What can you do?

77. www.leanpub.com/antifragilesoftware

78. Get Involved!

79. Thanks for your time!
@russmiles
russmiles.com

80. Watch the video with slide synchronization on
InfoQ.com!
http://www.infoq.com/presentations/test-
driven-microservices