Microservices War Stories

OSCON 2016

Transcript

1. Blithe Rocher
   OSCON
   May 18, 2016
   `
   MICROSERVICES
   WAR STORIES
   

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2. @BLITHE
   

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4. MICROSERVICES
   So…
   

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5. A MONOLITH
   vs.
   

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6. MICROSERVICES
   

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7. WHY ARE
   MICROSERVICES
   SO POPULAR?
   

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8. INDEPENDENT
   DEPLOYMENT & SCALABILITY
   1
   REASON
   

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9. 1
   REASON
   

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10. 1
    REASON
    

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11. 1
    REASON
    

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12. 1
    REASON
    

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13. 1
    REASON
    

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14. 1
    REASON
    

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15. COMPARTMENTALIZE
    TEAMS & RESPONSIBILITIES
    2
    REASON
    

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16. TECHNICAL
    DESIGN FREEDOM
    3
    REASON
    

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17. FAULT TOLERANCE
    4
    REASON
    

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18. WHY ME?
    

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19. MAKING MISTAKES
    & LEARNING FROM THEM
    Experience
    

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20. STORY TIME
    

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21. SUPPORTING NEW CONTENT TYPE
    1
    STORY
    Story
    

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22. STORY: Supporting New Content Type
    

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23. STORY: Supporting New Content Type
    

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24. STORY: Supporting New Content Type
    

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25. CONTENT-TYPE: TEXT/HTML
    ☹
    STORY: Supporting New Content Type
    

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26. STORY: Supporting New Content Type
    

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27. STORY: Supporting New Content Type
    

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28. STORY: Supporting New Content Type
    PROBLEM?
    

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29. STORY: Supporting New Content Type
    REMEDIES
    

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30. REMOVING A FEATURE FLAG
    2
    STORY
    Story
    

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31. UI Authorization Service
    STORY: Removing Feature Flags
    

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32. DELETING CODE
    Yay!
    STORY: Removing Feature Flags
    

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33. PROBLEM?
    STORY: Removing Feature Flags
    

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34. REMEDIES
    STORY: Removing Feature Flags
    

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35. TIGHTLY COUPLED SERVICES
    3
    STORY
    Story
    

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36. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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37. STORY: Tightly Coupled Services
    ALL THE WAY DOWN
    Headaches
    

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38. STORY: Tightly Coupled Services
    PRODUCTION
    

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39. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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40. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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41. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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42. STORY: Tightly Coupled Services
    DEVELOPMENT
    

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43. STORY: Tightly Coupled Services
    SERVICES NOT ISOLATED,
    ALL NEED TO BE RUNNING
    

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44. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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45. STORY: Tightly Coupled Services
    AUTOMATED TESTING
    

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46. STORY: Tightly Coupled Services
    Microservice
    A
    Database
    Microservice
    B
    

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47. STORY: Tightly Coupled Services
    VCR RECORDING
    Solution?
    

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48. STORY: Tightly Coupled Services
    API Responses - 1992
    

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49. STORY: Tightly Coupled Services
    VCR GEM
    STORY: Tightly Coupled Services
    

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50. STORY: Tightly Coupled Services
    PROBLEM?
    

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51. STORY: Tightly Coupled Services
    REMEDIES
    

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52. STORY: Tightly Coupled Services
    

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53. STORY: Tightly Coupled Services
    

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54. STORY: Tightly Coupled Services
    BUNDLE EXEC RAKE TEST:REAL
    

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55. STORY: Tightly Coupled Services
    BUNDLE EXEC RAKE TEST:MOCK
    

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56. STRING VS INTEGER
    4
    STORY
    Story
    

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57. STORY: String vs. Integer
    

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58. STORY: String vs. Integer
    

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59. STORY: String vs. Integer
    

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60. ONE ENDPOINT
    TO RULE THEM ALL
    STORY: String vs. Integer
    

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61. STORY: String vs. Integer
    

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62. STORY: String vs. Integer
    

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63. STORY: String vs. Integer
    

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64. STORY: String vs. Integer
    

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65. STORY: String vs. Integer
    

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66. STORY: String vs. Integer
    

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67. STORY: String vs. Integer
    

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68. STORY: String vs. Integer
    

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69. PROBLEM?
    STORY: String vs. Integer
    

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70. REMEDIES
    STORY: String vs. Integer
    

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71. SUMMARY & TAKE AWAYS
    

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72. THANKS!
    Questions?
    @Blithe
    

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