Autonomous deployments in modern distributed systems

Transcript

1. @jkubrynski
   @jkubrynski
   AUTONOMOUS
   AUTONOMOUS
   DEPLOYMENTS
   DEPLOYMENTS
   IN MODERN DISTRIBUTED SYSTEMS
   IN MODERN DISTRIBUTED SYSTEMS
   JAKUB KUBRYNSKI
   JAKUB KUBRYNSKI
   jakub@devskiller.com / @jkubrynski
   jakub@devskiller.com / @jkubrynski
   

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2. $ WHOAMI
   $ WHOAMI
   15+ PROFESSIONAL EXPERIENCE
   15+ PROFESSIONAL EXPERIENCE
   DEVSKILLER CO-FOUNDER
   DEVSKILLER CO-FOUNDER
   CONSULTANT & TRAINER
   CONSULTANT & TRAINER
   SPRING CLOUD CONTRACT CO-AUTHOR
   SPRING CLOUD CONTRACT CO-AUTHOR
   

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3. WHY DISTRIBUTED
   WHY DISTRIBUTED
   SYSTEMS?
   SYSTEMS?
   SCALABILITY
   SCALABILITY
   POLYGLOT
   POLYGLOT
   PARALLEL DEVELOPMENT
   PARALLEL DEVELOPMENT
   

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4. DISTRIBUTED
   DISTRIBUTED
   SYSTEMS
   SYSTEMS
   VS
   VS
   MICROSERVICES
   MICROSERVICES
   

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5. MICROSERVICES
   MICROSERVICES
   BRING
   BRING
   AUTONOMY
   AUTONOMY
   DYNAMIC SCALABILITY
   DYNAMIC SCALABILITY
   

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6. WHO NEEDS
   WHO NEEDS
   AUTONOMY?
   AUTONOMY?
   

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7. WHO NEEDS
   WHO NEEDS
   AUTONOMY?
   AUTONOMY?
   BUSINESS - FOR THE REAL AGILE
   BUSINESS - FOR THE REAL AGILE
   

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8. AUTONOMY IS HARD
   AUTONOMY IS HARD
   BECAUSE WE NEED TO COORDINATE
   BECAUSE WE NEED TO COORDINATE
   DEPENDENCIES
   DEPENDENCIES
   

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9. DISTRIBUTED SYSTEMS
   DISTRIBUTED SYSTEMS
   ALL ABOUT
   ALL ABOUT
   COMMUNICATION
   COMMUNICATION
   

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10. COORDINATION
    COORDINATION
    WITHOUT RELEASES
    WITHOUT RELEASES
    IS IT POSSIBLE?
    IS IT POSSIBLE?
    

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11. BACKWARD
    BACKWARD
    COMPATIBILITY
    COMPATIBILITY
    OVER
    OVER
    RELEASES
    RELEASES
    

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12. DEFERRED CHANGE
    DEFERRED CHANGE
    IT'S ABOUT SPLITTING ONE BREAKING
    IT'S ABOUT SPLITTING ONE BREAKING
    CHANGE INTO A SET OF BACKWARD
    CHANGE INTO A SET OF BACKWARD
    COMPATIBLE CHANGES
    COMPATIBLE CHANGES
    

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13. LET'S TALK ABOUT
    LET'S TALK ABOUT
    ROLLING UPDATES
    ROLLING UPDATES
    

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24. HOW TO MIGRATE COLUMN TYPE?
    HOW TO MIGRATE COLUMN TYPE?
    DATE -> DATETIME
    DATE -> DATETIME
    

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25. MIGRATION 1/2
    MIGRATION 1/2
    1. ADD
    1. ADD datetime
    datetime COLUMN
    COLUMN
    2. DEPLOY VERSION 2.0
    2. DEPLOY VERSION 2.0
    - READ FROM
    - READ FROM date
    date
    - WRITE TO
    - WRITE TO date+datetime
    date+datetime
    3. MIGRATE DATA
    3. MIGRATE DATA date => datetime
    date => datetime
    

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26. MIGRATION 2/2
    MIGRATION 2/2
    4. DEPLOY VERSION 3.0
    4. DEPLOY VERSION 3.0
    - READ FROM
    - READ FROM datetime
    datetime
    - WRITE TO
    - WRITE TO date+datetime
    date+datetime
    5. DEPLOY VERSION 4.0
    5. DEPLOY VERSION 4.0
    - READ FROM
    - READ FROM datetime
    datetime
    - WRITE TO
    - WRITE TO datetime
    datetime
    6. REMOVE COLUMN
    6. REMOVE COLUMN date
    date
    

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27. DEFERRED CHANGES
    DEFERRED CHANGES
    IN THE API
    IN THE API
    Step Server Client
    1 date date
    2 date+datetime date
    3 date+datetime datetime
    4 datetime datetime
    

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28. LET'S TALK ABOUT
    LET'S TALK ABOUT
    CONTRACT TESTS
    CONTRACT TESTS
    

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29. CONTRACT
    CONTRACT
    Request
    =======
    Method: GET
    URL: /courses/dna
    Headers:
    - Accept: application/json
    Response
    ========
    Status: 200 OK
    Headers:
    - Content-Type: application/json
    Body: {"name":"DNA", "status":"ACTIVE"}
    

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31. TALK IS CHEAP ;-)
    TALK IS CHEAP ;-)
    LET'S SEE THE CODE
    LET'S SEE THE CODE
    

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32. QUESTIONS?
    QUESTIONS?
    

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33. THANKS
    THANKS
    

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