#phpcon2022 エラーと向き合い、自信を持って サービス開発に取り組み、前に進む

PHP Conference Japan 2022での発表資料です

https://fortee.jp/phpcon-2022/proposal/ace60290-0c64-4a64-80ca-74fa5e27e446

※ 追加スライドを含む「配布版」はコチラ → https://speakerdeck.com/o0h/phpcon-2022

Transcript

1. PHP Conference Japan 2022
   
   
   Hideki Kinjyo
   
   
   GitHub: o0h / Twitter: @o0h_
   

   

   [ൃද൛]
   

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2. ࣗݾ঺հ
   /
   GitHub: @o0h / Twitter: @o0h_
   FW CakePHP
   

   
   

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3. 胸
   

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4. 胸
   

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5. ࣗ৴Λ࣋ͭɾɾʁ
   
   

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6. ࣗ৴Λ࣋ͭɾɾʁ
   
   

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7. ࣗ৴Λ࣋ͭɾɾʁ
   
   

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8. ( )
   

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9. Ͳ͏͢ΔʁˠʮΤϥʔͱ޲͖߹͏ʯ
   
 

   胸
   
   

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10. 胸
    1
    

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11. ͓͠ͳ͕͖
    1. - -
    2. - -
    3. - -
    4. - with Sentry-
    5.
    
    

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12. ͖͑͘͢ΎʔͣΈʔʂ
    Sentry
    😀
    
    

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13. ֓೦ɾݺͼํʹ͍ͭͯ
    : E_ALL
    :
    

    ( )
    : ( )
    :
    
    

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14. §1
    - -
    

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15. §1
    .1
    

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16. ݸਓతͳؾ࣋ͪ
    2
    胸
    
    

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17. ࢲతͳܦݧ
    or
    

    2 薄
    1.
    2.
    
    

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18. ࢲతͳܦݧᶃ
    
    

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19. ࢲతͳܦݧᶃ
    Open
    (Sentry Raygun Errbit)
    Rate Limit
    
    

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20. =
    ( )
    

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21. ϓϩҙࣝʹ݉Ͷඋ͑ΒΕΔ΂͖ʮྙཧʯ
    
    [ग़య]
    

    ᴷ Robert C. Martin,֯ ੐య.
    

    Clean Craftsmanshipɹن཯ɺج४ɺྙཧ (Japanese Edition) Kindle ൛ P335
    

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23. ࢲతͳܦݧᶄ
    PJ
    
    

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24. ࢲతͳܦݧᶄ
    PJ
    ( )
    
    

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25. ڳΛுͬͯνʔϜͷதʹډΒΕΔ͔
    (= )
    胸
    
    

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26. ͲͪΒ΋ٹ͍͍ͨ
    胸
    
    

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27. ΍Δ΂͖͜ͱʹऔΓ૊Ή
    

    胸
    
    

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28. §2
    - -
    

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29. §2
    .1
    .2
    

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30. ΍Γ͍ͨ͜ͱɺͦΕҎ֎ͷ͜ͱ
    

    =
    

    =
    

    
    

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31. Ձ஋ΛੜΈग़͢ͷʹ࢖͍͑ͯΔ࣌ؒ͸
    49%
    21%
    38% 27%
    
    [ग़య]
    

    ᴷ Nicole Forsgren Ph.D.,Jez Humble,Gene Kim,෢ࣷ޿޾, ෢ࣷΔΈ.
    

    LeanͱDevOpsͷՊֶ[Accelerate] ςΫϊϩδʔͷઓུత׆༻͕૊৫มֵΛՃ଎͢Δ P63
    

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32. ιϑτ΢ΣΞ։ൃͷʮ༧ఆ֎ʯͷΠϯύΫτ
    21%
    21
    
    

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33. §2
    .1
    .2
    

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34. ݶΒΕͨ࿑ྗΛ૿΍͢ɾ׆͔͢
    
    

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35. ΤϥʔͷҰੜ
    
    

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36. ίετͷҰੜ
    
    

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37. ΤϥʔରԠʹ܎Δίετ
    
    

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38. ಛఆ͕Ͱ͖ͯ΋ɾɾ૿͑ଓ͚͍ͯΔίετ
    , , ,
    , ,
    ( )
    1 ,
    ,
    ,
    , ,
    
    [ग़య]
    

    ᴷ Pete McBreen, ଜ্ խষ.
    

    XPΤΫετϦʔϜϓϩάϥϛϯάջٙฤʕXP͸ιϑτ΢ΣΞ։ൃͷٹੈओͨΓ͑Δͷ͔ P130
    

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39. ʮܽؕͷಛఆʯ͕ͦ͜໽հͳ໰୊
    
    [ग़య]
    

    ᴷ Weinberg, Gerald M, େ໺ ₼࿠(؂༁). ϫΠϯόʔάͷγεςϜࢥߟ๏ P234
    

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40. ൃݟͷى఺ͷҧ͍ʹΑΔෆܦࡁੑ
    ( )
    1.
    2. /
    
    

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41. ൃݟͷى఺ͷҧ͍ʹΑΔෆܦࡁੑ
    1.
    /
    (=outside-in)
    2. /
    
    

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42. ൃݟͷى఺ͷҧ͍ʹΑΔܦࡁੑ
    1.
    2. /
    (=inside-out)
    
    

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43. 
    

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44. Ͳ͏ͨ͠Βʮ௚͠΍͍͢໰୊ʯʹͰ͖Δ͔
    :
    ( ):
    :
    
    

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45. 
    X Z
    

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46. 
    X Z
    • XͰରԠͰ͖Ε͹ɺ
    

    ʮ2࣌ؒલͷίʔυͷҙਤʯΛࢥ͍ग़͚ͩ͢ͰࡁΉ
    

    (ຊ൪σϏϡʔͨͯ͠ͷίʔυͳͷͰɺඃґଘऀ΋গͳͦ͏)
    
    
    • ZͷରԠʹͳΔͱɺ
    

    ʮ3ϱ݄લͷίʔυͷҙਤʯΛ֬ೝ͢Δ͜ͱʹ
    

    (ͦͷதʹɺܽؕՕॴ΁ͷґଘ΋ؚ·ΕΔ)
    

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47. ए͍಺ʹժΛఠΉ
    
    [ग़య]
    

    ᴷ Steve McConnell, ೔ཱΠϯϑΥϝʔγϣϯΞΧσϛʔ. ϥϐου σϕϩοϓϝϯτ P81
    

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48. §2ͷ·ͱΊ(͍·࿩ͨ͜͠ͱ)
    

    
    

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49. §3
    - -
    

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50. §3
    .1
    .2 0
    .3
    

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51. ΤϥʔରԠͷ࢓૊Έʹ͍ͭͯʮ੒ख़౓ʯΛߟ͑Δ
    

    

    
    

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52. 
    

    
 
 

    ( )
    ( )
    

    

    

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53. 
    
 

    

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54. ʮྑ͍ʯΤϥʔରԠͷ࢓૊Έʹ͍ͭͯߟ͑Δ
    1.
    2.
    
    

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55. 1. Τϥʔ͸ͲͷΑ͏ʹه࿥ɾ؅ཧ͞Ε͍ͯ·͔͢
    1. ( )
    1 =1(orN) =1
    2.
    =1
    
    

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56. ( )
    
    

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57. ʮੜϩάཔΓʯͷ໰୊఺
    =>
    
    

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58. ( )
    
    

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59. ʮू໿ࡁΈʯͷར఺
    ( / )
    縮 ( )
    ( )
    =>
    

    ( )
    
    

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60. 2. Τϥʔʹ͸ͲͷΑ͏ʹؾͮ͘͜ͱ͕Ͱ͖·͔͢
    :
    :
    :
    
    PI͔ΒͷϫϯϙΠϯτΞυόΠεͷίʔφʔ👨🌾
    ୅ΘΓʹʮૣ͍ɾ͏·͍ɾ͍҆ʯͰ΋ՄͰ͢ʂ
    

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61. νʔϜͰʮ޲͖߹͑ʯ͍ͯΔ͔: ੒ख़ʹ޲͚ͯ
    ( )
    

    => Push Proactive
    
    

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62. §3
    .1
    .2 0
    .3
    

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63. ͓͞Β͍: ࣌ؒͷܦաͱରԠίετͷؔ܎
    

    =
    
    

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64. ʮγϑτϨϑτʯͱରԠίετͷؔ܎
    = ( )
    
    

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65. ϦϦʔεલʹ༧๷͢Δɺͱ͍ͬͯ΋ɾɾɾ
    
    

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66. ίεύͷྑ͍λΠϛϯάΛߟ͑Δ
    =>
    =>
    
    

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67. ίεύͷྑ͍λΠϛϯάΛߟ͑Δ
    結
    
    

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68. ίεύͷྑ͍λΠϛϯάΛߟ͑Δ
    

    Just-in-Time
    
    

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69. Τϥʔ͸͍ͭى͜Δͷ͔
    1. : ( )
    2. :
    

    ほほ( ) ✕✕( )
    
    

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70. ʮൃݟίετʯͱʮӨڹ(ඃ֐)ʯͷόϥϯεΛऔΔ
    駄
    
    

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71. ʮ0࣍ରԠʯΛऔΓೖΕΔ
    =
    =
    = 0
    ( ) =
    1 0
    
    

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72. ʮ0࣍ରԠʯͷܦࡁੑ
    ( )
    
    

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73. ʮ0࣍ରԠʯͷܦࡁੑ
    1.
    2.
    3.
    
    

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74. ʮ0࣍ରԠʯͷϝϦοτᶃ
    1.
    2.
    3.
    
    

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75. ʮ0࣍ରԠʯͷϝϦοτᶄ
    1.
    2.
    ( )
    3.
    
    

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76. ʮ0࣍ରԠʯͷϝϦοτᶅ
    1.
    2.
    3.
    DevOps
    
    

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77. §3
    .1
    .2 0
    .3
    

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78. ௵͢΂͖Τϥʔͷ؍఺
    2
    : 0
    1縮
    ( ) : 賢
    1. boolean
    2.
    
    

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79. ൃੜͷbooleanͰ͸ͳ͘ɺൃੜස౓Ͱ؂ࢹ͢Δ
    Duplicate entry for primary key
    

    :
    

    or
    :
    

    1 10,000,000,000,000,000,000,000,000,000
    
    

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80. ΞϓϦҎ֎ͷՕॴɾ؍఺Ͱ؂ࢹ͢Δ
    

    outside-in
    :
    

    Http Status Code(404, 502, etc)
    
    

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81. §3ͷ·ͱΊ(͍·࿩ͨ͜͠ͱ)
    0 :
    

    
    

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82. §4
    - with Sentry -
    

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83. §4
    .1 Sentry
    .2
    .3
    .4
    .5
    

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84. Sentry
    ( )SaaS
    (
    / )
    (β PHP )
    14
    
    

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85. GUI
    
    

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86. ʲ଎श༻ʳίϨ͚ͩ͸཈͓͑ͯ͘ʂSentryͷجૅ֓೦
    
    ( ) Sentry
    Event 胸
    Event
    1 Issue
    Event,Issue
    Alert
    

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87. §4
    .1 Sentry
    .2
    .3
    .4
    .5
    

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88. Πϯετʔϧํ๏
    composer require
    sentry/sentry : SDK HTTP
    (php-http/async-client-
    implementation)
    sentry/sdk: HTTP
    FW :
    (Symfony/Larevel)
    
    https://github.com/getsentry/sentry-php
    

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89. ΞΧ΢ϯτͷ࡞੒ͱΞϓϦέʔγϣϯઃఆ
    Sentry
    1. https://sentry.io/signup/
    2. PJ Event 胸 URL(DSN)
    
    https://sentry.io/for/php/
    

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90. 
    ϚεΫͰ͍͟͝·͢
    ϚεΫͰ͍͟͝·͢
    ϚεΫͰ͍͟͝·͢
    

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91. ಥવͷએ఻ʂʂʂʂ
    connehito/cake-sentry
    

    PR Starろ
    awesome-cakephp
    

    Sentry SDK 3rd party integrations
    💪
    

    cake4.4+
    Laravel
    
    ίωώτ͞Μͷٻਓ৘ใ΋೷͍ͯΈ͍ͯͩ͘͞ͶʂIUUQTISNPTDPQBHFTDPOOFIJUPKPCT
    

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92. §4
    .1 Sentry
    .2
    .3
    .4
    .5
    

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93. ͜͜·ͰͷʮͶΒ͍ʯΛSentry্Ͱ࣮ݱ͢Δ
    1. ( )
    0 ( )
    2. ( )
    ( )
    
    

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94. ͜͜·ͰͷʮͶΒ͍ʯΛSentry্Ͱ࣮ݱ͢Δ
    1. ( )
    0 ( )
    2. ( )
    ( )
    
    

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95. SentryͰ0࣍ରԠΛ࣮ફ͢Δ
    Alert
    Alert Create Alert
    Issues Set Conditions
    When: A new issue is created
    Then: Send a Slack noti
    fi
    cation
    

    Slack Integration
    
    Alert
    Alert
    

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96. SentryͰ0࣍ରԠΛ࣮ફ͢Δ
    When: The issue changes state
    from resolved to unresolved
    Then: Send a Slack noti
    fi
    cation
    
    

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97. SentryͰසग़Τϥʔݕ஌Λ࣮ફ͢Δ
    When: Number of events in an issue is
    more than XXX( ) in XXX( )
    Then: Send a Slack noti
    fi
    cation
    
    

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98. ิ଍: SentryͰશ͘ѻΘͳ͍Τϥʔʹ͍ͭͯ
    Resolve
    Sentry
    UserNotExistsException
    Sentry SDK 胸 FW
    
    ࢀߟ
    

    'JMUFSJOHGPS4ZNGPOZc4FOUSZ%PDVNFOUBUJPO
    

    IUUQTEPDTTFOUSZJPQMBUGPSNTQIQHVJEFTTZNGPOZDPO
    fi
    HVSBUJPO
    fi
    MUFSJOH
    fi
    MUFSJOHFSSPSFWFOUT
    

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99. ิ଍: SentryͰશ͘ѻΘͳ͍Τϥʔʹ͍ͭͯ
    Sentry 縮
    縮
    

    ( )
    Amazon CloudWatch
    
    

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100. 
 

     🎉
     

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101. ͜͜·ͰͷʮͶΒ͍ʯΛSentry্Ͱ࣮ݱ͢Δ
     1. ( )
     0 ( )
     2. ( )
     ( )
     
     

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102. ϋ΢εΩʔϐϯάͷ࣮ફ
     :
     
     

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103. ϋ΢εΩʔϐϯάͷ࣮ફ
     
     

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104. Issueͷ؅ཧ
     Issue Resolved Unresolved
     Issue Resolved
     : Web UI Slack Resolve
     
     

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105. ࣗಈResolveᶃ: ؍࡯ظؒʹΑΔղܾ
     ( Event )
     

     Resolve
     Resolve
     
     

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106. ࣗಈResolveᶄ: ϦϦʔεͷ࿈ಈʹΑΔղܾ
     胸 胸 (Event)
     

     (Resolved -> Regression)
     The next release:
     The current release:
     Another existing release:
     GitHub resolve
     
     

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107. UnresolvedͳIssueͷReview/Reviewed
     Issue
     ( ack 踏 )
     GitHub Issue tracker
     ぽ
     
     Review଴ͪIssueҰཡ
     ʮReviewࡁΈʯૢ࡞ͱมߋཤྺ
     

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108. UnresolvedͳIssueͷIgnore
     Issue
     (Ignore)
     Ignore
     Event
     
     

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109. ͜͜·ͰͷʮͶΒ͍ʯΛSentry্Ͱ࣮ݱ͢Δ
     1. ( )
     0 ( )
     2. ( )
     ( )
     
     

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110. IssueͷAssign
     Issue /
     Slack
     縮 Issue
     Assign
     Alert
     
     

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111. Issue্Ͱͷิ଍ɾίϝϯτ
     Issue
     Resolve
     Regression Issue
     
     

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112. ͦͷଞ(ൃද࣌͸ׂѪʂʂ)
     Event
     駄
     駄
     ex: POST body Request Context
     
     

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113. §4
     .1 Sentry
     .2
     .3
     .4
     .5
     

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114. ӡ༻ظʹ޲͚ͯͷਐΊํͷ֓ཁ
     1.
     2.
     3.
     4.
     
     

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115. ӡ༻ظʹ޲͚ͯͷਐΊํͷ֓ཁ
     1.
     2.
     3.
     4.
     
     

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116. πʔϧΛೖΕ͚ͨͩͰ͸ʮελʔτ஍఺ͷखલʯ
     1.
     ( 1 100 )
     2.
     0
     3. 縮
     4. Issue
     
     

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117. πʔϧΛೖΕ͚ͨͩͰ͸ʮελʔτ஍఺ͷखલʯ
     1.
     ( 1 100 )
     2.
     0
     3. 縮
     4. Issue
     
     

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118. πʔϧΛೖΕ͚ͨͩͰ͸ʮελʔτ஍఺ͷखલʯ
     1.
     ( 1 100 )
     2.
     0
     3.
     4. Issue
     
     

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119. πʔϧΛೖΕ͚ͨͩͰ͸ʮελʔτ஍఺ͷखલʯ
     1.
     ( 1 100 )
     2.
     0
     3. 縮
     4.
     Issue
     
     

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120. ӡ༻ظʹ޲͚ͯͷਐΊํͷ֓ཁ
     1.
     2.
     3.
     4.
     
     

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121. ελʔτʹཱͱ͏: ݱঢ়ͷೝࣝͱ໨ඪͷઃఆ
     (1 1 etc)
     
     

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122. ͲͷఆྔࢦඪΛ༻͍Δ͔
     2
     1.
     2.
     
     

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123. Ϣʔβʔ΁ͷΠϯύΫτͷ؍఺
     Sentry
     1. Event ( )
     2. Event (Web )
     
     

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124. ιϑτ΢ΣΞͷ඼࣭ͷ؍఺
     Sentry
     1. Event
     2. Event Issue
     3. Issue
     4. Unresolved Issue
     5. Resolve Issue
     6. Issue resolved
     
     

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125. ݸਓతͳΦεεϝ
     0
     

     Unresolved Issue
     ( ) Open
     Resolve
     

     
     

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126. ि͋ͨΓͷUnresolvedঢ়ଶͷIssue਺
     cons
     

     ( )
     Event 1
     1
     
     

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127. ि͋ͨΓͷUnresolvedঢ়ଶͷIssue਺
     pros
     0
     

     (
     )
     
     

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128. ఆྔࢦඪͷऔಘɾ؂ࢹํ๏
     Discover, Dashboard
     

     https://docs.sentry.io/product/
     dashboards/
     API
     

     https://docs.sentry.io/api/
     events/
     
     SandboxΞΧ΢ϯτͰͷμογϡϘʔυͷྫ
     

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129. Wedding Park
     https://speakerdeck.com/kazatohiei/phperkaigi2022
     https://engineers.weddingpark.co.jp/sentry/
     
     

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130. ӡ༻ظʹ޲͚ͯͷਐΊํͷ֓ཁ
     1.
     2.
     3.
     4.
     
     

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131. طଘΤϥʔͷղফͷ։࢝
     1. :
     2. :
     
     

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132. طଘΤϥʔͷղফͷ։࢝
     1. :
     For Review 0縮
     ( )
     2. :
     
     

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133. طଘΤϥʔͷղফͷ։࢝
     1. :
     2. :
     1
     OKR ぽ
     

     Key Result 1
     
     

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134. §4
     .1 Sentry
     .2
     .3
     .4
     .5
     

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135. ͓͞Β͍: ݸਓతʹେࣄʹ͍ͯ͠Δ͜ͱ
     1. 胸
     2.
     
     

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136. ͓͞Β͍: ݸਓతʹେࣄʹ͍ͯ͠Δ͜ͱ
     1. 胸
     2.
     
     

     

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137. ͓͞Β͍: ݸਓతʹେࣄʹ͍ͯ͠Δ͜ͱ
     1. 胸
     2.
     
     

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138. ໌೔͔Β࢝ΊΒΕΔͷ͔
     ( )
     
 

     
     

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139. (ͨͿΜ)͍͘Βڧௐͯ͠΋ɺ͠଍Γͳ͍ίτ
     

     
     

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140. (ͨͿΜ)͍͘Βڧௐͯ͠΋ɺ͠଍Γͳ͍ίτ
     
 

     
     

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141. ڳΛுͬͯνʔϜͷதʹډ͍ͨ
     
     

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142. ڳΛுͬͯνʔϜͷதʹډ͍ͨ
     

     
     

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143. ໌೔͔ΒԿΛ࢝ΊΒΕΔͷ͔
     

     
     

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144. Ͳ͏΍ͬͯมԽΛଅ͔͢
     
     

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145. Ͳ͏΍ͬͯมԽΛଅ͔͢
     BBQ
     
     

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146. ྑ͍มԽ͸ྑ͍ఉ͔Β࢝·Δ
     ( )
     1.
     2.
     3.
     
     

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147. ྑ͍มԽ͸ྑ͍ఉ͔Β࢝·Δ
     1.
     胸
     2.
     3.
     
     

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148. ྑ͍มԽ͸ྑ͍ఉ͔Β࢝·Δ
     1.
     2.
     Sentry
     3.
     
     

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149. ྑ͍มԽ͸ྑ͍ఉ͔Β࢝·Δ
     1.
     2.
     3.
     0
     Sentry (Resolve, Mark Reviewed )
     
     

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150. §5
     

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151. Τϥʔͱ޲͖߹͍ɺࣗ৴Λ࣋ͬͯ
     
     
     αʔϏε։ൃʹऔΓ૊ΈɺલʹਐΉ
     Sentry
     
     

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152. ͓͠·͍ʂ
     ͓෇͖߹͍͍͖ͨͩ
     

     ͋Γ͕ͱ͏͍͟͝·ͨ͠
     

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153. §X Appendix
     

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154. ࢀߟॻ੶ɾҾ༻ͨ͠ॻ੶
     Clean Craftsmanship (Japanese Edition)
     E
     ff
     ective DevOps 4
     Fearless Change
     48
     Google
     ITIL ITIL
     Leading Beyond Change: A Practical Guide to Evolving
     Business Agility
     Lean DevOps [Accelerate]
     Observability Engineering: Achieving Production Excellence
     XP XP
     :
     ――
     (
     )
     DevOps
     9
     ( 3 )
     9
     
     ޒेԻॱ
     
     

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155. Web্ͷࢀߟϦιʔε / Sentry͕ఏڙ͍ͯ͠ΔϦιʔε
     Product Guides | Sentry Documentation
     

     https://docs.sentry.io/product/
     API Reference | Sentry Documentation
     

     https://docs.sentry.io/api/
     Spend Less Time on Bugs & More Time on Features: Sentry + Sleuth | Sentry
     

     https://sentry.io/resources/improve-and-automate-your-work
     fl
     ow/
     Automate, Group, and Get Alerted: A Best Practices Guide to Monitoring your Code | Sentry
     

     https://sentry.io/resources/automate-group-get-alerted/
     Sentry - YouTube ろ
     

     https://www.youtube.com/c/Sentry-monitoring
     
     

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156. Web্ͷࢀߟϦιʔε / Sentryͷಋೖɾ׆༻ࣄྫ
     / PHPerKaigi2022 - Speaker Deck
     

     https://speakerdeck.com/kazatohiei/phperkaigi2022
     Sentry | Wedding Park CREATORS Blog
     

     https://engineers.weddingpark.co.jp/sentry/
     Raygun Sentry - BASE
     

     https://devblog.thebase.in/entry/raygun2sentry
     -
     

     https://daisuki.nichiyoubi.land/entry/2020/07/01/
     123616#%E3%81%AA%E3%81%9C%E3%82%84%E3%82%8B%E3%81%AE%E3%81%8B
     
     

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157. Web্ͷࢀߟϦιʔε / DevOpsɺϞχλϦϯά
     Monitoring Check Smells
     

     https://benjiweber.co.uk/blog/2015/03/02/monitoring-check-smells/
     5
     2020 (1/2) CodeZine
     

     https://codezine.jp/article/detail/12052
     

     https://www.youtube.com/watch?v=9RPgdJyeA7Y&t=4784s
     State of DevOps Four Keys ( ) / Introduction to State
     of DevOps and Four Keys for Visualizing Productivity in Development Organizations expanded and
     revised edition - Speaker Deck
     

     https://speakerdeck.com/isanasan/introduction-to-state-of-devops-and-four-keys-for-visualizing-
     productivity-in-development-organizations-expanded-and-revised-edition
     
     

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158. Web্ͷࢀߟϦιʔε / ඼࣭ɾอकɾ༧๷
     

     https://blogs.itmedia.co.jp/morisaki/2012/04/post-7e5d.html
     - Cybozu Inside Out |
     

     https://blog.cybozu.io/entry/2016/05/18/103000
     - / Growing Reliable Code PHPerKaigi 2022 -
     Speaker Deck
     

     https://speakerdeck.com/twada/growing-reliable-code-phperkaigi-2022
     / Agility and Quality Characteristics Developers Summit 2021 Summer -
     Speaker Deck
     

     https://speakerdeck.com/twada/agility-and-quality-characteristics-developers-summit-2021-summer
     - pixiv inside
     

     https://inside.pixiv.blog/shimashima/6247
     
     

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159. Web্ͷࢀߟϦιʔε / ͦͷଞ(จԽɺ૊৫ͳͲ)
     I -
     

     https://daisuki.nichiyoubi.land/entry/2021/12/11/182323
     #scrumosaka / Scrum Fest Osaka 2021 Keynote -
     Speaker Deck
     

     https://speakerdeck.com/bu
     ff
     erings/scrum-fest-osaka-2021-keynote
     / The Debt - Speaker Deck https://
     speakerdeck.com/toricls/the-debt
     / You won't be in the team forever - Speaker Deck
     

     https://speakerdeck.com/toricls/you-wont-be-in-the-team-forever
     
     

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