Back to forgotten roots

Slides from my "Back to the roots" talk, performed at Boilings Frogs 2017, the software craftsmanship conference.

Transcript

1. BACK TO FORGOTTEN
   RootS
   Mariusz Gil
   [ source ministry ]
   @mariuszgil
   

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3. START
   The
   

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4. HoW
   

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5. Microservices
   

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6. Serverless
   

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7. Nosql
   

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8. lambda function
   

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9. solid principles
   

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10. design patterns
    

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11. object oriented programming
    

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12. Grasp principles
    

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13. SSDD/HDD
    

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16. Build & use toolbox. Wisely
    

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17. Too
    trivial
    to implement
    Too
    Complex
    to maintain
    

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18. OVER ENGINEERED since day 1
    

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19. WhaT
    

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21. oo violations
    

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22. DIG
    DIG
    DIG
    

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24. interface ItemProvider { ... }
    interface ItemFilter { ... }
    class MostPopular implements ItemProvider { ... }
    class RecentlyPopular implements ItemProvider { ... }
    class Random implements ItemProvider { ... }
    class Promoted implements ItemProvider { ... }
    class CollaborativeFiltering implements ItemProvider { ... }
    class Clicked implements ItemFilter { ... }
    class Capping implements ItemFilter { ... }
    class Outdated implements ItemFilter { ... }
    class SimilarNameDuplication implements ItemFilter { ... }
    class RecommenderService
    {
    ...
    public function generate($limit = 5)
    {
    $items = $provider->get($limit * 2);
    foreach ($this->filters as $filter) {
    $items = $filter->filter($items);
    }
    if ($items->length() < $limit) {
    $items = $items->add($refill->get($limit));
    }
    return $items->unique()->limit($limit);
    }
    }
    

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26. step back, to see more
    

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27. GRASP
    General responsibility assignment softw
    are patterns
    

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28. 19 95
    

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29. 20 04
    

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30. Days vs months
    

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31. TDD/RDD
    

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33. Define & solve problem
    Using right tools
    

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34. WhY
    

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35. V
    ALUE
    The
    

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37. Solve right problem
    

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38. WhY noT
    

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39. Solve problem worth to solve
    

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40. we use ...
    to build ...
    foR ...
    to help with ...
    

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41. LearN
    

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42. BACK TO FORGOTTEN
    Mariusz Gil
    RootS
    [ source ministry ]
    @mariuszgil
    

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