Rip It Up - The Microservice Organisation

1. RIP IT UP AND START AGAIN? Sam Newman THE MICROSERVICES ORGANISATION

2. @samnewman Sam Newman Building Microservices DESIGNING FINE-GRAINED SYSTEMS

3. @samnewman NEW BOOK! https://samnewman.io/books/monolith-to-microservices/

4. @samnewman Inventory Returns Invoicing Accounts Customer Service Shipping

5. @samnewman Inventory Returns Invoicing Accounts Customer Service Shipping

6. @samnewman Inventory Returns Invoicing Accounts Customer Service Shipping Independently deployable services that work together, modelled around a business domain

7. @samnewman Independently deployable services that work together, modelled around a business domain

8. @samnewman Independently deployable services that work together, modelled around a business domain

9. Inventory Returns Invoicing Accounts Customer Service Shipping V1

10. Inventory Returns Invoicing Accounts Customer Service Shipping V2

11. @samnewman Music Corp

12. @samnewman Music Corp Persistence

17. @samnewman Music Corp Persistence Low Cohesion

18. @samnewman Music Corp Persistence Low Cohesion

19. @samnewman Music Corp Persistence Low Cohesion High Coupling

20. @samnewman Music Corp Persistence Low Cohesion High Coupling

21. @samnewman ONION ARCHITECTURE Music Corp Persistence Low Cohesion High Coupling

22. @samnewman 3 TIERED ARCHITECTURE

23. @samnewman 3 TIERED ARCHITECTURE Presentation

24. @samnewman 3 TIERED ARCHITECTURE Presentation Business

25. @samnewman 3 TIERED ARCHITECTURE Presentation Business Data Access

26. @samnewman 3 TIERED ARCHITECTURE Presentation Business Data Access FE Devs

27. @samnewman 3 TIERED ARCHITECTURE Presentation Business Data Access Devs FE Devs

28. @samnewman 3 TIERED ARCHITECTURE Presentation Business Data Access Devs DBAs FE Devs

29. @samnewman TRADITIONAL IT STRUCTURES Devs QAs DBAs Ops

30. @samnewman TRADITIONAL IT STRUCTURES Devs QAs DBAs Ops

31. @samnewman TRADITIONAL IT STRUCTURES Devs QAs DBAs Ops CIO/CTO

32. @samnewman TRADITIONAL IT STRUCTURES Devs QAs DBAs Ops CIO/CTO “The Business”

33. @samnewman CONWAY’S LAW

34. @samnewman CONWAY’S LAW "Organizations which design systems ... are constrained to produce designs which are copies of the communication structures of these organizations" - Melvin Conway

35. @samnewman FEATURE-BASED TEAMS Presentation Business Data Access

38. @samnewman FEATURE-BASED TEAMS Presentation Business Data Access Devs DBAs FE Devs

39. @samnewman FEATURE-BASED TEAMS Presentation Business Data Access Devs DBAs FE Devs Contention

40. @samnewman FEATURE-BASED TEAMS Presentation Business Data Access Devs DBAs FE Devs Contention Temporary Teams?

41. @samnewman Feature-based teams = collective ownership

42. @samnewman SPLIT DIFFERENTLY Presentation Business Data Access Presentation Business Data Access Presentation Business Data Access

43. @samnewman FASTER DELIVERY Inventory Returns Invoicing Accounts Customer Service Shipping

47. @samnewman CODE OWNERSHIP https://martinfowler.com/bliki/CodeOwnership.html

48. @samnewman CODE OWNERSHIP https://martinfowler.com/bliki/CodeOwnership.html Strong

49. @samnewman CODE OWNERSHIP https://martinfowler.com/bliki/CodeOwnership.html Strong Weak

50. @samnewman CODE OWNERSHIP https://martinfowler.com/bliki/CodeOwnership.html Strong Weak Collective

51. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service

54. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service Flexible working

55. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service Retaining product and technical alignment? Flexible working

56. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service Retaining product and technical alignment? Flexible working Business alignment?

57. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service Retaining product and technical alignment? Flexible working Business alignment? Co-ordination!

58. @samnewman COLLECTIVE OWNERSHIP? Accounts Returns Invoicing Shipping Inventory User Service Retaining product and technical alignment? Flexible working Business alignment? Scale? Co-ordination!

59. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service

62. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership

63. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership Increased autonomy

64. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership Increased autonomy Easier to align to the business

65. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership Increased autonomy Easier to align to the business Bottlenecks?

66. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership Increased autonomy Easier to align to the business Bottlenecks? Orphaned Services?

67. @samnewman SERVICES OWNED BY TEAMS Accounts Returns Invoicing Shipping Inventory User Service Clear lines of ownership Increased autonomy Easier to align to the business Bottlenecks? Orphaned Services? Local vs Global Optimisation?

68. @samnewman Collective code ownership struggles with scale

69. @samnewman Collective Ownership Strong Ownership

70. @samnewman Collective Ownership Strong Ownership

71. @samnewman Collective Ownership Strong Ownership Global consistency

72. @samnewman Collective Ownership Strong Ownership Global consistency Local optimisation

73. @samnewman Independent Deployablility

74. @samnewman STEVE YEGGE’S PLATFORM RANT https://plus.google.com/+RipRowan/posts/eVeouesvaVX

75. @samnewman STEVE YEGGE’S PLATFORM RANT “All teams will henceforth expose their data and functionality through service interfaces” https://plus.google.com/+RipRowan/posts/eVeouesvaVX

76. @samnewman STEVE YEGGE’S PLATFORM RANT “All teams will henceforth expose their data and functionality through service interfaces” “Teams must communicate with each other through these interfaces” https://plus.google.com/+RipRowan/posts/eVeouesvaVX

77. @samnewman

78. @samnewman Amazon prioritises local optimisation

79. APIs

80. APIs Co-ordination

81. Shipping V2 DB

82. Shipping V2 DB

83. Shipping V2 DB

84. Shipping V2 DB

85. Shipping V2 DB

86. Shipping V2 DB

87. @samnewman PROBLEMS WITH DEFINED OWNERSHIP BOUNDARIES Accounts Returns Invoicing Shipping Inventory User Service Bottlenecks

88. @samnewman PROBLEMS WITH DEFINED OWNERSHIP BOUNDARIES Accounts Returns Invoicing Shipping Inventory User Service Bottlenecks Orphaned Services

89. @samnewman PROBLEMS WITH DEFINED OWNERSHIP BOUNDARIES Accounts Returns Invoicing Shipping Inventory User Service Bottlenecks Orphaned Services Local Optimisation

90. @samnewman BOTTLENECKS Inventory Returns Invoicing Accounts Customer Service Shipping

93. @samnewman BOTTLENECKS Inventory Returns Invoicing Accounts Customer Service Shipping Move People

94. @samnewman BOTTLENECKS Inventory Returns Invoicing Accounts Customer Service Shipping Move People

95. @samnewman BOTTLENECKS Inventory Returns Invoicing Accounts Customer Service Shipping Move People Pull Request

96. @samnewman BOTTLENECKS Inventory Returns Invoicing Accounts Customer Service Shipping Move People Pull Request

97. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping

98. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping

99. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping ???

100. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping ??? Take Ownership

101. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping ??? Take Ownership

102. @samnewman ORPHANED SERVICES Inventory Returns Invoicing Accounts Customer Service Shipping ??? Take Ownership Roving Custodian

105. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping

106. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo!

107. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo! Oracle!

108. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo! Oracle! Cassandra!

109. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo! Oracle! Cassandra!

110. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo! Oracle! Cassandra! Communities Of Practice

111. @samnewman LOCAL OPTIMISATION Inventory Returns Invoicing Accounts Customer Service Shipping Mongo! Oracle! Cassandra! Communities Of Practice Governance

112. @samnewman RIP IT UP AND START AGAIN? “And there was times I'd take my pen And feel obliged to start again” - Orange Juice

113. @samnewman Local vs Global Optimisation

114. @samnewman Microservices are an architecture which optimises for autonomy You have to decide how much autonomy you want

115. @samnewman THANKS! https://samnewman.io/