Join me in this talk to hear about my personal experience of transferring monolith business critical application to microservice architecture, with zero downtime, thanks to using API's You will hear, war stories, what went as planed, what were wrong. Hopefully you will enjoy them, have a laugh and learn new things. You will leave this talk with more knowledge and experience about this subject, and how to solve this problems if you encounter them in your day to day work.

1. Changing wheels on moving
car, from Monolith to
Microservices by using API's V3
Vladimir DejanovićVoxxed Days Belgrade
19 October 2017
@VladimirD_42@VoxxedBelgrade

2. Let’s Meet
@VladimirD_42
Vladimir Dejanović
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3. @VladimirD_42
http://www.beograd.com/wp-content/themes/bgcom/img/background123.jpg
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4. Agenda
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5. Agenda
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ref: http://motonetworks.com/wp-content/uploads/2016/04/arab-stunt-driving.jpg
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6. Agenda
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Important Truths and Questions
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7. Agenda
@VladimirD_42
Important Truths and Questions
Breaking the Monolith
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8. Agenda
@VladimirD_42
Important Truths and Questions
API to the rescue
Breaking the Monolith
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9. Agenda
@VladimirD_42
Important Truths and Questions
API to the rescue
Questions
Breaking the Monolith
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10. @VladimirD_42@VoxxedBelgrade

11. @VladimirD_42@VoxxedBelgrade
https://i2.wp.com/softwaretestingbooks.com/wp-content/uploads/2016/05/Get-Paid-to-Find-Software-Bugs-Online.jpg

12. @VladimirD_42@VoxxedBelgrade
http://clipart-library.com/img1/1941663.jpg

13. @VladimirD_42
ref: https://englishmaninitaly.files.wordpress.com/2014/07/button.jpg
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14. @VladimirD_42
ref: https://holisticmoving.files.wordpress.com/2015/05/laughing8.jpg
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15. War Story
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10k

16. War Story
@VladimirD_42@VoxxedBelgrade
10k -> 1.3 M

17. @VladimirD_42
ref: http://fcpaprofessor.com/wp-content/uploads/2016/05/lessonslearned.jpg
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18. Lesson 1
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19. @VladimirD_42@VoxxedBelgrade

20. Lesson 2
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21. @VladimirD_42
ref: https://i.ytimg.com/vi/3RGXP23qipo/maxresdefault.jpg
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22. Lesson 3
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23. @VladimirD_42
ref: http//www.truthmove.org/news-category/surveillance/
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24. @VladimirD_42
ref: http://motonetworks.com/wp-content/uploads/2016/04/arab-stunt-driving.jpg
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25. @VladimirD_42
ref: http://cdn.playbuzz.com/cdn/135533e4-8b11-4af0-8638-6525eff069e0/9d2f35d6-a75a-44e7-8259-6ff1abb00ce4.jpg
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26. @VladimirD_42@VoxxedBelgrade

27. @VladimirD_42
http://www.xzamcorp.com/images/FingerWait.jpg
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28. Accept
@VladimirD_42
The real question isn’t “if” the
system will break
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29. @VladimirD_42
ref: http://www.kloudymail.com/wp-content/uploads/2015/09/quando-schedulare-una-campagna-di-email-marketing.jpg
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30. @VladimirD_42
ref: https://s-media-cache-ak0.pinimg.com/originals/c8/63/da/c863dac6e4eeb6256623c212ea34293b.jpg
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31. @VladimirD_42
ref: http://imgs.sfgate.com/blogs/images/sfgate/bmangan/2010/10/18/trainwreck.jpg
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32. @VladimirD_42
ref: http://www.priceperhead.com/wp-content/uploads/2015/08/pay-per-head-bookie-things-avoid-management.jpg
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33. Important Questions
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34. Question 1
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35. @VladimirD_42
ref:http://cdn.architecturendesign.net/wp-content/uploads/2015/02/AD-Helpful-Tips-For-People-Who-Have-No-Clue-What-To-Do-With-A-Baby-15.jpg
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36. Question 2
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37. @VladimirD_42
ref: http://www.datacentertalk.com/wp-content/uploads/2012/01/it-guy-0013.png
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38. Question 3
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39. @VladimirD_42
ref: http://www.livescience.com/53280-hydrogen-bomb-vs-atomic-bomb.html
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40. @VladimirD_42
ref:https://image.slidesharecdn.com/breakingthemonolithfeb13nus-130224015502-phpapp01/95/breaking-the-monolith-fast-distributed-web-services-using-se
ts-feb13-nus-18-638.jpg
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41. Monolith to Micro
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42. Monolith to Micro
@VladimirD_42@VoxxedBelgrade

43. Monolith to Micro
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44. @VladimirD_42
ref:http://assets.bonappetit.com/photos/57d32e45bd794aa9132639a4/master/w_625,c_limit/lernert-sander-cubes-crop2.jpg
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45. Monolith to Micro
@VladimirD_42@VoxxedBelgrade

46. Monolith to Micro
@VladimirD_42@VoxxedBelgrade

47. Monolith to Micro
@VladimirD_42@VoxxedBelgrade

48. Monolith to Micro
@VladimirD_42@VoxxedBelgrade

49. @VladimirD_42
ref: https://www.ecritel.fr/IMG/jpg/network2.jpg
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50. Monolith to Micro
@VladimirD_42
ref: https://recherche.orange.com/wp-content/uploads/2015/11/databasequestionmark.png
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51. @VladimirD_42
ref: http://www.bankingtech.com/files/2016/03/API.jpg
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52. @VladimirD_42
ref: https://qph.ec.quoracdn.net/main-qimg-f08207c22aaace3c95ffde03fbf027a7
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53. API’s
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54. API’s
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55. API’s
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56. API’s
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57. API’s
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58. API’s
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59. API’s
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60. API’s
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61. Common Mistakes
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62. Common Mistakes
@VladimirD_42
ref: http://somebodyshoulda.com/wp-content/uploads/2013/10/Perfect1.jpg
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63. Common Mistakes
@VladimirD_42
Perfect doesn’t exist
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64. Common Mistakes
@VladimirD_42
Perfect doesn’t exist
Something can be perfect only in your mind
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65. Common Mistakes
@VladimirD_42
ref: http://chateauxrealtyparkcity.com/wp-content/uploads/2016/06/bigstock-Do-it-Yourself-concept-28287233.jpg
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66. @VladimirD_42@VoxxedBelgrade

67. @VladimirD_42@VoxxedBelgrade

68. @VladimirD_42@VoxxedBelgrade

69. @VladimirD_42@VoxxedBelgrade

70. Common Mistakes
@VladimirD_42
No standards used
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71. @VladimirD_42
ref: http://www.neuresourcegroup.com.au/brainwaves-for-leaders-blog//2012/08/09/hate-long-meetings-try-the-10-minute-standing-meeting/
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72. @VladimirD_42
ref: https://i0.wp.com/keyholesoftware.com/wp-content/uploads/HATEOAS.png
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73. @VladimirD_42@VoxxedBelgrade

74. @VladimirD_42
“I'm sorry Dave, I'm afraid I can't do that”
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75. @VladimirD_42
HAL
Hypertext Application Language
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76. @VladimirD_42
HAL
Hypertext Application Language
Adopting HAL will make your API explorable, and its
documentation easily discoverable from within the
API itself.
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77. @VladimirD_42
HAL
Hypertext Application Language
Adopting HAL will make your API explorable, and its
documentation easily discoverable from within the
API itself.
DRAFT
@VoxxedBelgrade

78. Common Mistakes
@VladimirD_42
ref: http://www.rothenterprise.com/wp-content/uploads/2014/11/Electricity-Plug-Socket-Variations-for-Sri-Lanka.jpg
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79. @VladimirD_42
ref: http://nationswell.com/wp-content/uploads/2014/01/rows-of-paperwork-in-files.jpg
Common Mistakes
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80. @VladimirD_42@VoxxedBelgrade

81. @VladimirD_42
ref: http://www.stethnews.com/wp-content/uploads/2015/07/China-Money.jpg
@VoxxedBelgrade

82. @VladimirD_42
ref: http://vignette3.wikia.nocookie.net/degrassi/images/0/02/O-BABY-FOOD-MESS-facebook.jpg
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83. @VladimirD_42
http://i.usatoday.net/news/_photos/2012/01/09/Light-oil-spill-after-New-Zealand-ship-splits-8KQIGVU-x-large.jpg
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84. @VladimirD_42
ref: https://dab1nmslvvntp.cloudfront.net/wp-content/uploads/2016/05/1463750487Christ_Church_Library_Oxford-17189963462.jpg
@VoxxedBelgrade

85. @VladimirD_42
http://0d47eeef2abf05521f71-1e80f65b3c6327b7cb4b0619fd21f75b.r59.cf2.rackcdn.com/BC6AA823-31A8-481C-9923-5E7CFE4807B5.jpg
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86. @VladimirD_42
ref: http://www.tbo.com/storyimage/TB/20150930/ARTICLE/150939976/AR/0/AR-150939976.jpg
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87. @VladimirD_42
ref: http://goodereader.com/blog/wp-content/uploads/images/advertise1-890x395.jpg
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88. @VladimirD_42
ref: https://img.clipartfest.com/cdb4a70e78530c75d0a2cc6bd1b86357_stubborn-mule-clipart-force-clipart_2400-1321.jpeg
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89. Questions
@VladimirD_42
@VladimirD_42
ed.wong.iv@gmail.com
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90. @VladimirD_42
Thank You
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