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Practical microservices - NDC 2014

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Presented at NDC London, December 2014

Microservice architectures can lead to easier to change, more maintainable systems which can be more secure, performant and stable than previous designs. But what are the practical concerns associated with running more fine-grained systems, and what are the new things you’ll need to know if you want to embrace the power of smaller services without the new sources of complexity making your life a nightmare? This talk will delve deeper into the characteristics of well-behaved services, and will define some clear principles your services should follow. It will also discuss in more depth some of the challenges associated with managing and monitoring more complex distributed systems. We’ll discuss how you can design services to be more fault-tolerant, what technologies may exist in your own platform to get you started. We’ll end by giving some pointers as to when you should consider microservice architectures, and how you should go about introducing them in your own organisation.

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Practical microservices - NDC 2014

  1. 1. PRACTICAL CONSIDERATIONS FOR MICRO SERVICES Sam Newman NDC London, December 2014 1
  2. 2. 14 PRACTICAL TIPS FOR MICROSERVICES Sam Newman NDC London, December 2014 2
  3. 3. YOU WON’T BELIEVE WHAT THEY DO WITH MICROSERVICES IN THIS TALK! Sam Newman NDC London, December 2014 3
  4. 4. SEE WHAT JENNIFER LAWRENCE THINKS ABOUT DISTRIBUTED SYSTEMS! Sam Newman NDC London, December 2014 4
  5. 5. Customer Service Accounts Returns Invoicing Shipping Inventory #ndclondon @samnewman
  6. 6. Customer Service Small Accounts Returns Invoicing Shipping Inventory #ndclondon @samnewman
  7. 7. Customer Service Small Modelled Around Business Domain Accounts Returns Invoicing Shipping Inventory #ndclondon @samnewman
  8. 8. Customer Service Small Modelled Around Business Domain Accounts Returns Invoicing Shipping Inventory Autonomous #ndclondon @samnewman
  9. 9. #ndclondon @samnewman
  10. 10. #ndclondon @samnewman
  11. 11. V1 #ndclondon @samnewman
  12. 12. V2 #ndclondon @samnewman
  13. 13. Go Java NodeJS Ruby #ndclondon @samnewman
  14. 14. Go NodeJS Ruby Clojure! #ndclondon @samnewman
  15. 15. #ndclondon @samnewman
  16. 16. #ndclondon @samnewman
  17. 17. #ndclondon @samnewman
  18. 18. #ndclondon @samnewman
  19. 19. Where To Standardise? #ndclondon @samnewman
  20. 20. #©n d2cl0on1d3o nElectronic Arts Inc. @samnewman
  21. 21. #ndclondon @samnewman
  22. 22. Interfaces #ndclondon @samnewman
  23. 23. Interfaces Monitoring #ndclondon @samnewman
  24. 24. Interfaces Monitoring Deployment & Testing #ndclondon @samnewman
  25. 25. Architectural Safety #ndclondon @samnewman
  26. 26. #ndclondon @samnewman
  27. 27. Free For All #ndclondon @samnewman
  28. 28. Standardisation Free For All #ndclondon @samnewman
  29. 29. Standardisation TIP 1 / 14: Standardise in the gaps between services - be flexible about what happens inside the boxes Free For All #ndclondon @samnewman
  30. 30. #ndclondon @samnewman
  31. 31. #ndclondon @samnewman
  32. 32. #ndclondon @samnewman
  33. 33. #ndclondon @samnewman
  34. 34. #ndclondon @samnewman
  35. 35. #ndclondon @samnewman https://www.flickr.com/photos/garrymsmith/6108841070
  36. 36. Autonomy Communication #ndclondon @samnewman
  37. 37. Team Ownership #ndclondon @samnewman
  38. 38. Team Ownership ??? #ndclondon @samnewman
  39. 39. Trusted Committer / Roving Custodian #ndclondon @samnewman
  40. 40. Trusted Committer / Roving Custodian ??? #ndclondon @samnewman
  41. 41. Trusted Committer / Roving Custodian ??? #ndclondon @samnewman
  42. 42. Trusted Committer / Roving Custodian ??? #ndclondon @samnewman
  43. 43. Trusted Committer / Roving Custodian ??? #ndclondon @samnewman
  44. 44. Trusted Committer / Roving Custodian ??? #ndclondon @samnewman
  45. 45. Trusted Committer / Roving Custodian TIP 2 / 14: Have a cle?a?r ?custodian model! #ndclondon @samnewman
  46. 46. Interfaces #ndclondon @samnewman
  47. 47. #ndclondon @samnewman
  48. 48. #ndclondon @samnewman
  49. 49. #ndclondon @samnewman
  50. 50. Coupling Is Bad #ndclondon @samnewman
  51. 51. Integration Styles An Evolutionary View Data Oriented Procedure Oriented Document Oriented Resource Oriented #ndclondon @samnewman
  52. 52. Integration Styles An Evolutionary View Data Oriented Procedure Oriented Document Oriented Resource Oriented #ndclondon @samnewman
  53. 53. Integration Styles An Evolutionary View TIP 3 / 14: Be careful of RPC-mechanisms/shared serialisation protocols to avoid coupling Data Oriented Procedure Oriented Document Oriented Resource Oriented #ndclondon @samnewman
  54. 54. Database #ndclondon @samnewman
  55. 55. Database #ndclondon @samnewman
  56. 56. Database #ndclondon @samnewman
  57. 57. Database #ndclondon @samnewman
  58. 58. Database #ndclondon @samnewman
  59. 59. Database #ndclondon @samnewman
  60. 60. Database #ndclondon @samnewman
  61. 61. Database Database #ndclondon @samnewman
  62. 62. Database Database #ndclondon @samnewman
  63. 63. TIP 4 / 14: Separate the databases before separating services Database Database #ndclondon @samnewman
  64. 64. The Customer Is Always Right #ndclondon @samnewman
  65. 65. #ndclondon @samnewman
  66. 66. #ndclondon @samnewman
  67. 67. TIP 5 / 14: Adopt a consumer first approach #ndclondon @samnewman
  68. 68. Monitoring #ndclondon @samnewman
  69. 69. #ndclondon @samnewman
  70. 70. http://www.flickr.com/photos/kalexanderson/5421517469/ #ndclondon @samnewman
  71. 71. http://www.flickr.com/photos/kalexanderson/5421517469/ #ndclondon @samnewman
  72. 72. #ndclondon @samnewman
  73. 73. #ndclondon @samnewman
  74. 74. ??? #ndclondon @samnewman
  75. 75. You have to get *much* better at monitoring #ndclondon @samnewman
  76. 76. #ndclondon @samnewman
  77. 77. #ndclondon @samnewman
  78. 78. #ndclondon @samnewman
  79. 79. #ndclondon @samnewman
  80. 80. You are not a badass if you use an SSH Multiplexer #ndclondon @samnewman
  81. 81. #ndclondon @samnewman
  82. 82. #ndclondon @samnewman
  83. 83. #ndclondon @samnewman
  84. 84. Response Time Response Time Response Time #ndclondon @samnewman
  85. 85. Response Time Response Time Response Time #ndclondon @samnewman
  86. 86. Response Time Response Time Response Time #ndclondon @samnewman
  87. 87. #ndclondon @samnewman
  88. 88. #ndclondon @samnewman
  89. 89. TIP 6 / 14: Capture metrics, and logs, for each node, and aggregate them to get a rolled up picture #ndclondon @samnewman
  90. 90. #ndclondon @samnewman
  91. 91. #ndclondon @samnewman
  92. 92. #ndclondon @samnewman
  93. 93. TIP 7 / 14: Use synthetic transactions to test production systems #ndclondon @samnewman
  94. 94. #ndclondon @samnewman
  95. 95. #ndclondon @samnewman
  96. 96. #ndclondon @samnewman
  97. 97. ID: 123 #ndclondon @samnewman
  98. 98. ID: 123 ID: 123 ID: 123 #ndclondon @samnewman
  99. 99. ID: 123 TIP 8 / 14: Use correlation IDs to track down nasty bugs ID: 123 ID: 123 #ndclondon @samnewman
  100. 100. Deployment #ndclondon @samnewman
  101. 101. #ndclondon @samnewman
  102. 102. #ndclondon @samnewman
  103. 103. #ndclondon @samnewman
  104. 104. ! #ndclondon @samnewman
  105. 105. ! ! #ndclondon @samnewman
  106. 106. ! ! ! #ndclondon @samnewman
  107. 107. #ndclondon @samnewman
  108. 108. #ndclondon @samnewman
  109. 109. #ndclondon @samnewman
  110. 110. TIP 9 / 14: Abstract out underlying platform differences to provide a uniform deployment mechanism #ndclondon @samnewman
  111. 111. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  112. 112. Customer Service Accounts Returns Invoicing Shipping Inventory #ndclondon @samnewman
  113. 113. Customer Service Accounts Returns Invoicing Shipping Inventory #ndclondon @samnewman
  114. 114. Inventory Accounts Mountebank http://www.mbtest.org #ndclondon @samnewman
  115. 115. Inventory Accounts Stub Mountebank http://www.mbtest.org #ndclondon @samnewman
  116. 116. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  117. 117. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  118. 118. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  119. 119. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  120. 120. Shipping Inventory Customer Service Accounts Returns Invoicing #ndclondon @samnewman
  121. 121. #ndclondon @samnewman
  122. 122. Browsers #ndclondon @samnewman
  123. 123. Timing Browsers #ndclondon @samnewman
  124. 124. Provisioning of Environments Timing Browsers #ndclondon @samnewman
  125. 125. Networks Provisioning of Environments Timing Browsers #ndclondon @samnewman
  126. 126. Deployment Networks Provisioning of Environments Timing Browsers #ndclondon @samnewman
  127. 127. Deployment Networks Provisioning of Environments Timing Browsers Diagnosis #ndclondon @samnewman
  128. 128. CONSUMER-DRIVEN CONTRACTS Shipping Inventory #ndclondon @samnewman
  129. 129. CONSUMER-DRIVEN CONTRACTS Shipping Inventory Expectations #ndclondon @samnewman
  130. 130. CONSUMER-DRIVEN CONTRACTS Shipping Inventory Expectations #ndclondon @samnewman
  131. 131. CONSUMER-DRIVEN CONTRACTS Shipping Inventory Expectations Prod #ndclondon @samnewman
  132. 132. CONSUMER-DRIVEN CONTRACTS Shipping Inventory Expectations Prod #ndclondon @samnewman
  133. 133. #ndclondon @samnewman
  134. 134. https://github.com/realestate-com-au/pact #ndclondon @samnewman
  135. 135. TIP 10 / 14: Consumer Driven Tests to catch breaking changes https://github.com/realestate-com-au/pact #ndclondon @samnewman
  136. 136. Pending… Prod
  137. 137. Pending… Prod
  138. 138. Pending… Prod
  139. 139. Pending… Prod
  140. 140. Pending… Prod
  141. 141. Pending… Prod TIP 11 / 14: Don’t let changes build up - release as soon as you can, and preferably one at a time!
  142. 142. Architectural Safety #ndclondon @samnewman
  143. 143. #ndclondon @samnewman
  144. 144. #ndclondon @samnewman
  145. 145. #ndclondon @samnewman
  146. 146. #ndclondon @samnewman
  147. 147. http://www.flickr.com/photos/louish/5611657857/ #ndclondon @samnewman
  148. 148. Connection Pool #ndclondon @samnewman
  149. 149. Connection Pool #ndclondon @samnewman
  150. 150. Connection Pool #ndclondon @samnewman
  151. 151. Connection Pool #ndclondon @samnewman
  152. 152. Connection Pool Connection Pool #ndclondon @samnewman
  153. 153. Connection Pool Connection Pool #ndclondon @samnewman
  154. 154. Connection Pool Connection Pool #ndclondon @samnewman
  155. 155. Connection Pool Connection Pool #ndclondon @samnewman
  156. 156. #ndclondon @samnewman
  157. 157. #ndclondon @samnewman
  158. 158. #ndclondon @samnewman
  159. 159. TIP 12 / 14: Use timeouts, circuit breakers and bulk-heads to avoid cascading failure #ndclondon @samnewman
  160. 160. Special Service Behaviour #ndclondon @samnewman
  161. 161. Integration Special Service Behaviour #ndclondon @samnewman
  162. 162. Integration Special Service Behaviour Downstream #ndclondon @samnewman
  163. 163. Integration Special Service Behaviour Downstream Metrics #ndclondon @samnewman
  164. 164. Integration Special Service Behaviour Downstream Metrics #ndclondon @samnewman
  165. 165. Integration Special Service Behaviour Downstream Metrics #ndclondon @samnewman
  166. 166. Integration Special Service Behaviour Metrics TIP 13 / 14: Consider Service Templates to make it easy to do the right thing! Downstream #ndclondon @samnewman
  167. 167. #ndclondon @samnewman
  168. 168. #ndclondon @samnewman
  169. 169. #ndclondon @samnewman
  170. 170. #ndclondon @samnewman
  171. 171. Choice Opportunity #ndclondon @samnewman
  172. 172. Choice Opportunity Complexity #ndclondon @samnewman
  173. 173. Choice Opportunity Monitoring Complexity Deployment Safety Integration #ndclondon @samnewman
  174. 174. Choice Opportunity TIP 14 / 14: Find your own balance Monitoring Complexity Deployment Safety Integration #ndclondon @samnewman
  175. 175. 62 Building Microservices DESIGNING FINE-GRAINED SYSTEMS Sam Newman
  176. 176. Designing For Rapid Release 500 West Madison 500 West Madison #ndclondon @samnewman
  177. 177. 500 West Madison 500 West Madison From Macro To Micro Designing For Rapid Release #ndclondon @samnewman
  178. 178. 500 West Madison 500 West Madison From Macro To Micro Designing For Rapid Release http://lanyrd.com/profile/samnewman/ #ndclondon @samnewman
  179. 179. THANKS! Any questions: @samnewman snewman@thoughtworks.com

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