CODE, TEST, DEPLOY, REPEAT

Continuous delivery, deployment, integration: a lot of buzzwords of our times start with "continuous". But do they exist in real life? Or is this just fantasy? In this session, I'll show how real and impactful CI/CD can be by telling you the story of how we are building "continuous stuff" at VONQ. It's a story about tests, pipelines, automation and feature toggles, but, more importantly, about changing mindsets.

We'll go through each of the stages - coding, testing, deploying (and delivering) - and we'll find out (spoiler!) why the road to continuous delivery is valuable even if you're not going to deploy in production many times per day.

Transcript

1. CODE
   TEST
   DEPLOY
   REPEAT Antonello D'Ippolito
   @antodippo
   

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2. Antonello
   D'Ippolito
   CODE
   TEST
   DEPLOY
   REPEAT
   2
   CONTINUOUS INTEGRATION
   CONTINUOUS DELIVERY
   CONTINUOUS DEPLOYMENT
   

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3. Antonello
   D'Ippolito
   CODE
   TEST
   DEPLOY
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   3
   HELLO!
   Antonello D'Ippolito
   @antodippo
   backend engineer @
   

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4. 1.
   CODE
   4
   

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5. Antonello
   D'Ippolito
   CODE
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   DEPLOY
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   FAST AND TINY PRs
   CODE REVIEWS
   PAIR PROGRAMMING
   CODE
   

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6. 6
   FEATURE
   TOGGLES
   

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7. Antonello
   D'Ippolito
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   if (toggleIsOn) {
   $this->newFancyFunctionality();
   } else {
   $this->oldFunctionality();
   }
   FEATURE
   TOGGLES
   

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8. Antonello
   D'Ippolito
   CODE
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   FEATURE
   TOGGLES
   https://www.martinfowler.com/articles/feature-toggles.html
   

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9. Antonello
   D'Ippolito
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   9
   DECOUPLE TOGGLE FROM DECISION
   CENTRALIZE THE LOGIC
   AVOID CONDITIONALS
   REMOVE TOGGLES
   FEATURE
   TOGGLES
   

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10. Antonello
    D'Ippolito
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    10
    ● github.com/qandidate-labs/qandidate-toggle
    ● github.com/qandidate-labs/qandidate-toggle-bundle
    ● github.com/qandidate-labs/qandidate-toggle-api
    FEATURE
    TOGGLES
    qandidate/toggle
    

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11. Antonello
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    FEATURE
    TOGGLES
    qandidate/toggle
    ALWAYS ACTIVE
    ALWAYS INACTIVE
    CONDITIONALLY ACTIVE
    

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12. Antonello
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    FEATURE
    TOGGLES
    qandidate/toggle
    // Create the ToggleManager
    $manager = new ToggleManager(new InMemoryCollection());
    // A toggle that will be active when the user id is less than 42
    $operator = new LessThan(42);
    $condition = new OperatorCondition('user_id', $operator);
    $toggle = new Toggle('toggling', array($condition));
    // Add the toggle to the manager
    $manager->add($toggle);
    // Create and check a new context for a user with id 42
    $context = new Context();
    $context->set('user_id', 42);
    var_dump($manager->active('toggling', $context)); // false
    

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13. 2.
    TEST
    13
    

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17. Antonello
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    SMOKE TESTS
    USER ACCEPTANCE TESTS (BEHAT)
    TEST
    UI
    INTEGRATION
    UNIT
    INTEGRATION & COMPONENT TESTS
    (BEHAT, PHPUNIT)
    UNIT TESTS (PHPSPEC)
    

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18. 3.
    DEPLOY
    18
    

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19. “
    Antonello
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    IF IT HURTS
    DO IT MORE OFTEN
    DEPLOY
    

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20. Antonello
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    DEPLOY
    

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21. Antonello
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    EVERYONE
    CAN DEPLOY
    DEPLOY
    

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22. Antonello
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    PIPELINES (JENKINS)
    DEPLOY
    SETUP
    PROJECT
    TEST
    SUITES
    MISC.
    CHECKS
    BUILD
    ARTIFACT
    SETUP
    PROJECT
    TEST
    SUITES
    MISC.
    CHECKS
    BUILD
    ARTIFACT
    DEPLOY
    ACCEPTANCE
    SETUP
    PROJECT
    TEST
    SUITES
    MISC.
    CHECKS
    BUILD
    ARTIFACT
    DEPLOY
    PRODUCTION
    SMOKE
    TESTS
    PUSH
    MERGE
    TAG
    ACC.
    TESTS
    

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23. Antonello
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    MEASURE & MONITOR EVERYTHING
    DEPLOY
    ● API CALLS RESPONSE TIME
    ● CONTROLLERS LOADING TIME
    ● CRONS EXIT STATUS
    ● ERROR LOGS
    ● ...
    

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24. 4.
    DELIVER
    24
    

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25. “
    Antonello
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    DECOUPLE DEPLOY
    FROM RELEASE
    DELIVER
    

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26. Antonello
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    DELIVER
    A/B TESTING
    CANARY RELEASE
    

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27. 5.
    YES, BUT WHAT'S
    IN IT FOR ME?
    27
    

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28. Antonello
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    IT SHARPENS
    YOUR DEVOPS SKILLS
    

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29. Antonello
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    STRESS FREE
    DEPLOYS
    

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31. Antonello
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    FAST FEEDBACK
    ● FROM CI
    ● FROM MONITORING
    ● FROM USERS
    

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32. Antonello
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    YOU'RE GONNA FAIL.
    THE PROBLEM IS HOW SOON
    

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34. “
    Antonello
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    EL CAMINO
    ES LA RECOMPENSA
    Oscar W.
    Tabárez
    

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35. “
    Antonello
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    You can’t do it without automating your entire build,
    deploy, test, and release process.
    You can’t do it without a comprehensive, reliable set of
    automated tests.
    You can’t do it without writing system tests that run
    against a production-like environment.
    Continuous Delivery - Jez Humble, David Farley
    

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36. “
    Antonello
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    That’s why, even if you can’t actually release every set of
    changes that passes all your tests, you should aim to
    create a process that would let you do so if you choose to.
    Continuous Delivery - Jez Humble, David Farley
    

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37. Antonello
    D'Ippolito
    CODE
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    37
    THANKS!
    (No canaries were harmed in the making of this talk)
    Antonello D'Ippolito
    @antodippo
    

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