circuit_switch: small start to create gem

at 2021.10.10. Kaigi on Rails _2021_ new

Transcript

1. DJSDVJU_TXJUDI
   

   ͍ͪ࢝͘͞ΊΔHFNͮ͘Γ
   2021.10.10.
   
   
   Kaigi on Rails _2021_ new
   
   
   @makicamel
   

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2. w!NBLJDBNFM઒ݪສق
   w3VCZͱϏʔϧɹɹͱ͓ञ͕޷͖
   w޷͖ͳ73ήʔϜ
   ࣗݾ঺հ
   

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3. ࠷ۙࠔ͍ͬͯΔ͜ͱ
   ͓࢓ࣄͰ
   

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4. ো֐͕ଟ͍
   

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5. •ӨڹൣғௐࠪΛ͕Μ͹Ζ͏
   
   
   •ϨϏϡʔΛ͕Μ͹Ζ͏
   
   
   •ࣗಈςετͷ௥ՃɾϝϯςΛ͕Μ͹Ζ͏
   
   
   •खಈςετΛ͕Μ͹Ζ͏
   
   
   •Τϥʔ؂ࢹΛ͕Μ͹Ζ͏
   ো֐Λىͨ͜͠ਓྨͷߟ͕͑ͪͳ͜ͱ
   ΋ͬͱ
   ΋ͬͱ
   ΋ͬͱ
   ΋ͬͱ
   ΋ͬͱ
   

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6. ͕Μ͹Γͨ͘ͳ͍
   

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7. •͕Μ͹ΔͱϛεΔ
   
   
   •͕Μ͹Γ͸ݸਓʹґଘ
   
   
   •͕Μ͹ΔͱർΕΔ
   
   
   •͕Μ͹Δ͸Ӭԕʹ͸ܧଓͰ͖ͳ͍
   
   
   ͕Μ͹Γͨ͘ͳ͍
   

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8. ࢓૊ΈͰͳΜͱ͔͍ͨ͠
   

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9. ɹো֐͕ଟ͍ΜͰ͢Α…😣
   ɹ90% ϛε͕ͳ͍͜ͱͷอূ͸ͦͦ͜͜Ͱ͖Δ͚Ͳ
   

   ɹ100% ϛε͕ͳ͍͜ͱͷอূ͸ͱͯ΋ߴίετ
   ɹϦϦʔεස౓Λ্͛Δͷ͕೉ͯ͘͠…😭
   ɹ͙͢ʹ੾Γ໭ͤΔΑ͏ʹͨ͠ํ͕
   

   ɹ݈શ͔΋͠Ε·ͤΜͶ
   

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10. •ϦϦʔε͸िʹ 1 ճ
    
    
    ˞
    

    ˞ো֐ରԠΛআ͘
    

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11. •ϦϦʔε͸िʹ 1 ճ
    
    
    •100ʙ200 Pull Requests
    
    
    •500ʙ1,000 commits
    
    
    •10Kʙ60K lines
    
    
    ˞
    ϏοάόϯϦϦʔε
    

    ˞Ұ൪ݹ͘ػೳ͕ଟ͍ϞϊϦγοΫϦϙδτϦʹ͓͚Δ਺ɻଟ͘ͷଞϦϙδτϦ͸΋ͬͱԺ΍͔Ͱ͢
    

    ˞ো֐ରԠΛআ͘
    ˞
    

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12. ϦϦʔείετ͕ߴͯ͘ো֐͕ଟ͘ɾେ͖͘ͳΓ͕ͪ
    
    
    ো֐͕ଟͯ͘ϦϦʔεස౓Λ্͛ΒΕͳ͍
    ϏοάόϯϦϦʔε
    

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13. ͱ͍͏Θ͚Ͱ
    

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14. ͭͬͨ͘
    NBLJDBNFMDJSDVJU@TXJUDI
    

    IUUQTHJUIVCDPNNBLJDBNFMDJSDVJU@TXJUI
    

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15. circuit_switch
    

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16. ɹো֐͕ଟ͍ΜͰ͢Α…😣
    ɹ90% ϛε͕ͳ͍͜ͱͷอূ͸ͦͦ͜͜Ͱ͖Δ͚Ͳ
    

    ɹ100% ϛε͕ͳ͍͜ͱͷอূ͸ͱͯ΋ߴίετ
    ɹϦϦʔεස౓Λ্͛Δͷ͕೉ͯ͘͠…😭
    ɹ͙͢ʹ੾Γ໭ͤΔΑ͏ʹͨ͠ํ͕
    

    ɹ݈શ͔΋͠Ε·ͤΜͶ
    

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17. circuit_switch
    ΍Γ͍ͨ͜ͱɿ
    
    
    ϦϦʔεස౓Λ͋͛Δ
    

    ˞ϦϦʔεස౓΋͍͋͛ͨͰ͢
    

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18. circuit_switch
    ΍Γ͍ͨ͜ͱɿ
    
    
    ௿ίετʹ੾Γ໭͢
    

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19. circuit_switch
    
    if CircuitSwitch.open?(close_if_reach_limit: false)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    
    
    CircuitSwitch.report(if: unexpected_happen)
    
    
    

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20. circuit_switch
    
    if CircuitSwitch.open?(close_if_reach_limit: false)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    
    
    

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21. circuit_switch
    
    •CircuitSwitch ͕։͍͍ͯΔ࣌ do_something_experimental ΛݺͿ
    
    
    •CircuitSwitch ͕ด͡ΒΕͨ࣌ call_existing_codes ΛݺͿ
    
    
    if CircuitSwitch.open?(close_if_reach_limit: false)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    
    
    

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22. circuit_switch
    •CircuitSwitch ͷ։ด৚݅
    نఆ্ݶճ਺ʹ౸ୡ
    
    
    ։์৚݅ͱҰக
    
    
    ด࠯৚݅ͱҰக
    
    
    ৗ࣮࣌ߦʴڧ੍ด࠯
    

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23. circuit_switch
    •CircuitSwitch ͷ։ด৚݅
    
    if CircuitSwitch.open?(reach_limit: 100)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    نఆ্ݶճ਺ʹ౸ୡ
    
    
    ։์৚݅ͱҰக
    
    
    ด࠯৚݅ͱҰக
    
    
    ৗ࣮࣌ߦʴڧ੍ด࠯
    

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24. circuit_switch
    
    if CircuitSwitch.open?(if: current_user.testing?)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    •CircuitSwitch ͷ։ด৚݅
    نఆ্ݶճ਺ʹ౸ୡ
    
    
    ։์৚݅ͱҰக
    
    
    ด࠯৚݅ͱҰக
    
    
    ৗ࣮࣌ߦʴڧ੍ด࠯
    

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25. circuit_switch
    
    if CircuitSwitch.open?(
    
    
    close_if: Date.today > some_period
    
    
    )
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    •CircuitSwitch ͷ։ด৚݅
    نఆ্ݶճ਺ʹ౸ୡ
    
    
    ։์৚݅ͱҰக
    
    
    ด࠯৚݅ͱҰக
    
    
    ৗ࣮࣌ߦʴڧ੍ด࠯
    

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26. circuit_switch
    
    
    rake circuit_switch:terminate_to_run
    

    [/app/services/greetings_service:21 block
    

    in validate]
    
    
    •CircuitSwitch ͷ։ด৚݅
    if CircuitSwitch.open?(close_if_reach_limit: false)
    
    
    do_something_experimental
    
    
    else
    
    
    call_existing_codes
    
    
    end
    نఆ্ݶճ਺ʹ౸ୡ
    
    
    ։์৚݅ͱҰக
    
    
    ด࠯৚݅ͱҰக
    
    
    ৗ࣮࣌ߦʴڧ੍ด࠯
    

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27. circuit_switch
    CircuitSwitch.report(if: unexpected_happen)
    
    
    •CircuitSwitch ͕։͍͍ͯΔ࣌ report ΛૹΔ
    
    
    •Slack ΍ Bugsnag ͳͲ೚ҙͷϨϙʔτπʔϧΛࢦఆ
    
    
    •։ด৚݅͸ open? ͱྨࣅͷ৚݅Λࢦఆ
    

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28. circuit_switch
    •ґଘϥΠϒϥϦ
    
    
    •ActiveRecord
    
    
    •࣮ߦߦʢcallerʣɾCircuitSwitch ͷ։ดঢ়ଶΛ DB ʹอଘ
    
    
    •ActiveJob
    
    
    •DB ߋ৽ɾϨϙʔτ
    

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29. circuit_switch
    •ίʔυϦʔμʔͷΈͲ͜Ζ
    

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30. circuit_switch
    •ίʔυϦʔμʔͷΈͲ͜Ζ
    
    
    •ͳ͍
    

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31. circuit_switch
    •ίʔυϦʔμʔͷΈͲ͜Ζ
    
    
    •ͳ͍
    
    
    •ͳ͍ͷ͕ΈͲ͜Ζʢʁʣ
    

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32. ΈͲ͜Ζ
    •Կ΋มΘͬͨ͜ͱΛ΍͍ͬͯͳ͍
    
    
    •Rails ͷίʔυ͕ॻ͚ͨΒॻ͚Δ
    
    
    •ࠓ͙͢ॻ͖࢝ΊΒΕΔ
    

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33. ΈͲ͜Ζ
    •;ͭ͏ͷ Rails ΞϓϦ͕ґଘ͍ͯ͠ΔϥΠϒϥϦʹґଘ
    
    
    •ࠓ͙͢ಋೖͰ͖Δ
    
    
    

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34. ͱ͜ΖͰ͓ؾ͖͔ͮͱࢥ͍·͕͢
    

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35. Inspired by
    •Feature Toggles
    
    
    •CircuitBreaker
    
    
    'FBUVSF5PHHMFTNBSUJOGPXMFSDPN
    

    IUUQTNBSUJOGPXMFSDPNBSUJDMFTGFBUVSFUPHHMFTIUNM
    $JSDVJU#SFBLFSNBSUJOGPXMFSDPN
    

    IUUQTNBSUJOGPXMFSDPNCMJLJ$JSDVJU#SFBLFSIUNM
    

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36. Feature Toggles
    •৽ػೳΛಛఆϢʔβʹ҆શɾ଎΍͔ʹఏڙ͢ΔͨΊͷ࢓૊Έ
    
    
    •ؔ࿈ɿDark Launch
    
    
    •🙅 େن໛ feature ϒϥϯν্Ͱͷ։ൃ
    

    🙆 master(main) ϒϥϯνʹ߹ྲྀͨ͠։ൃ
    
    
    'FBUVSF5PHHMFTNBSUJOGPXMFSDPN
    

    IUUQTNBSUJOGPXMFSDPNBSUJDMFTGFBUVSFUPHHMFTIUNM
    

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37. Feature Toggles
    •ΧφϦΞϦϦʔε
    
    
    •ϥϯμϜબग़ͷۃҰ෦ͷҰൠϢʔβʹػೳ։์༷ͯ͠ࢠݟ
    
    
    •A / B ςετ
    'FBUVSF5PHHMFTNBSUJOGPXMFSDPN
    

    IUUQTNBSUJOGPXMFSDPNBSUJDMFTGFBUVSFUPHHMFTIUNM
    

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38. CircuitBreaker
    •αʔόʹಛఆճ਺Ҏ্ͷো֐͕ൃੜͨ࣌͠ʹ
    

    ϦΫΤετΛड͚෇͚ͣʹΤϥʔΛฦ͢࢓૊Έ
    
    
    •ো֐ͷ࿈࠯తͳൃੜΛ๷͙
    
    
    •αʔό͕վળͨ͠ΒࣗಈͰ෮ؼ͢Δ
    $JSDVJU#SFBLFSNBSUJOGPXMFSDPN
    

    IUUQTNBSUJOGPXMFSDPNCMJLJ$JSDVJU#SFBLFSIUNM
    

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39. Inspired by … ?
    

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40. Inspired by … ?
    •ΠϯεύΠΞ͞Εͨͱ͍͏ʹ͸࢓૊Έ͕͠ΐ΅͍
    
    
    •τάϧͷ؅ཧʹ೉͕͋Δ
    
    
    •ϒϨʔΧʔΛམͱ͢৚͕݅ͨͩͷճ਺
    
    
    •ࣗಈ෮ؼ͠ͳ͍
    
    
    •DB ΞΫηεΛ͢ΔͷͰΦʔόʔϔου͕ੜ͡Δ
    

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41. ɹো֐͕ଟ͍ΜͰ͢Α…😣
    ɹ90% ϛε͕ͳ͍͜ͱͷอূ͸ͦͦ͜͜Ͱ͖Δ͚Ͳ
    

    ɹ100% ϛε͕ͳ͍͜ͱͷอূ͸ͱͯ΋ߴίετ
    ɹϦϦʔεස౓Λ্͛Δͷ͕೉ͯ͘͠…😭
    ɹ͙͢ʹ੾Γ໭ͤΔΑ͏ʹͨ͠ํ͕
    

    ɹ݈શ͔΋͠Ε·ͤΜͶ
    

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42. Ұ఺ूத
    •΄͍͠ͷ͸ʮ௿ίετʹ੾Γ໭ͤΔʯ࢓૊Έ
    
    
    •ͱʹ͔͘ࠓ΄͍͠ ػೳ͚ͩΛ࣮૷ͯ͠ϦϦʔε
    
    
    

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43. ॠൃྗ
    •ͱΓ͋͑ͣ΄͔ͬͨ͠
    
    
    •ϨϏϡʔɾௐࠪɾςετίετ͕૿େ͍ͯ͠Δঢ়گΛվળ͍ͨ͠
    
    
    •ݱ৔ͷࠓ͋Δ՝୊Λࠓ͙͢ղܾ͍ͨ͠
    
    
    •଍Γͳ͍஌ࣝɾٕज़͸ͨ͘͞Μ͋Δ
    
    
    •४උ͕Ͱ͖Δ·Ͱ଴ͭͱ͋ͬͱ͍͏ؒʹ݄೔͕ա͗Δ
    

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44. ॠൃྗ
    •MVP
    
    
    •Minimum Viable Product
    
    
    •࣮༻࠷খݶͷ੡඼
    
    
    •ఏڙ͠ͳ͕Β։ൃ͢Δ
    

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45. ΍Βͳ͍ཧ༝
    •ͦ͏͔΋͠Εͳ͍
    
    
    •ͦ͏Ͱͳ͍͔΋͠Εͳ͍
    
    
    •OSS ʹ͓͚ͯ͠͹୭͔ͷ໾ʹཱ͔ͭ΋͠Εͳ͍
    
    
    •OSS ʹ͠ͳ͍ཧ༝͸ͳ͍
    ɹgem ʹ͠ͳͯ͘΋͍͍Μ͡Όͳ͍ʁ
    
    
    

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46. ՝୊ʹΞϓϩʔν͢Δ
    •ίʔυͷ೉͠͞ͱϥΠϒϥϦͷՁ஋͸ؔ܎ͳ͍
    ɹ͜Μͳ͠ΐ΅͍ίʔυΛੈʹग़͢ͳΜͯ…
    
    
    

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47. ·ͣ͸͍ͪ࢝͘͞ΊΔ
    

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48. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠
    

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