FeatureFlagを用いた新機能の安全なマージ&リリース / FeatureFlag

by lni_T

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'FBUVSF'MBHΛ༻͍ͨ ৽ػೳͷ҆શͳϚʔδϦϦʔε !MOJ@5 .FFUVQGPS3BJMTFOHJOFFST

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ࣗݾ঺հ w 5XJUUFS!MOJ@5  (JU)VC!MOJU w .FE1FFS&OHJOFFS ʙ w ޷͖ͳ3BJMTͷϝιου  QSFTFODF w ݏ͍ͳ3BJMTͷϝιου  BDDFQUT@OFTUFE@BUUSJCVUFT@GPS

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ΫϦχοΫ։ۀࢧԉ ϓϥοτϑΥʔϜ

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ͭͬͨ͘΋ͷ ஍ਤ্Ͱ ෺݅୳͠ ڝ߹ͷఁ࡯ ױऀ਺༧ଌ ͕Ͱ͖Δ͍͢͝΍ͭ

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ͦΜͳ৽ػೳ։ൃͷࠔΓࣄ ͷղܾࣄྫ

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ʮ৽αʔϏε࡞Δͧʂʯ

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ʮͨ͘͞ΜػೳͰ͖ͨʯ ͦͷޙʜ

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ڊେ'FBUVSF#SBODI

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ڊେ'FBUVSF#SBODI ৽ػೳ׬੒·Ͱͷಛେػೳϒϥϯν ͭΒ͍ ϨϏϡʔ͕Ͱ͖ͳ͍ ຊମϒϥϯνͱͷဃ཭ ଞνʔϜͱͷڝ߹ ϦϑΝΫλϦϯάͯ͠িಥ

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EFWຊͰ͍͖͍ͨ

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ϒϥϯνઓུ ϓϧϦΫΤετΛࡉ͔͘ຊମʹϚʔδ͢Δઓུ Կ΋ߟ͑ͣʹ࠾༻͢ΔͱϦεΩʔ ػೳ׬੒·Ͱίʔυ͕ϦϦʔεෆՄঢ়ଶʹ ࡞Γ͔͚ͷػೳͰϝϯόʔશһͷ؀ڥ͕յΕͨΓ ϒϥϯν؅ཧ͍ͨ΁Μ

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No content

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ʮΑ͠ɺϦϦʔεͩʜʯ Α͏΍͘ʜ

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ʮ͋ʂຊ൪ʹมͳ ɹσʔλ͕ʂʯ

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ʮ͋ΕɺઌํͷωοτϫʔΫʹ ͭͳ͕Βͳ͍ʯ

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ຊ൪؀ڥ͸όάͷๅݿ ༧ظͤ͵໰୊ͭΒ͍ σʔλىҼ ωοτϫʔΫىҼ ઃఆ஋ىҼ ͦͷଞॾʑ؀ڥࠩ෼

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ͳΜͱ͔͍ͨ͠ ϒϥϯν͍ͨ΁Μ໰୊ ຊ൪͜Θ͍໰୊

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ղܾΞϓϩʔν͍Ζ͍Ζ ϒϥϯν͍ͨ΁Μ໰୊ ૊৫ߏ੒ͷมߋ ίʔυ҆ఆԽ ػೳΛࡉ͔͘࡞Δ ϦϦʔεՄೳ඼࣭Λอͭ ຊ൪͜Θ͍໰୊ ݕূ؀ڥͷ੔උ ຊ൪ʹ͍ۙςετσʔλ ؀ڥࠩ෼ͷআڈ ຊ൪Ͱಈ࡞ݕূ͢Δ

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ૉૣ͘ϦϦʔεՄೳʹ͠ ຊ൪Ͱݕূ͠Α͏

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'FBUVSF'MBH 5PHHMF

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'FBUVSF'MBH ػೳ͕ಈ࡞͢Δಈ࡞͠ͳ͍Λ੾Γସ͑Δػߏ ιʔείʔυ͸σϓϩΠ͢Δ͕ɺ  ػೳ͸ʮಈ࡞͠ͳ͍ʯঢ়ଶʹ͓ͯ͘͠ Ϛʔδͯ͠΋ಈ࡞Өڹͳ͠ ϦϦʔεՄೳʂ OFX

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'FBUVSF'MBH ػೳ͕ಈ࡞͢Δಈ࡞͠ͳ͍Λ੾Γସ͑Δػߏ ςετϢʔβʔʹ͚ͩެ։Ͱ͖ΔΑ͏ʹ͢Δ Ұൠެ։લʹຊ൪؀ڥͰςετ ຊ൪΋ා͘ͳ͍ʂ OFX 5FTUFS

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࣮૷ͯ͠Ͳ͏ͳ͔ͬͨ

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'FBUVSFϒϥϯνͷૣظ߹ྲྀ όοΫΤϯυଆ͸EFWFMPQຊ13Ͱ։ൃ ϑϩϯτΤϯυଆ͸࠷ॳ͸'FBUVSFϒϥϯνʹͳ͕ͬͨʜ ͦͷޙEFWFMPQʹ߹ྲྀͯ͠13Ͱ։ൃ EFWFMPQ GFBUVSF

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҆৺Ͱ͖ΔϦϦʔε σϞ༻ΞΧ΢ϯτͰҰ௨Γಈ͘͜ͱΛࣄલ֬ೝ

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҆৺Ͱ͖ΔϦϦʔε Τϥʔ௨஌͕དྷͯ΋མͪண͍ͯ֬ೝͰ͖Δ

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࣮૷ํ๏ ࣗϓϩμΫτͰͷҰྫ

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'MJQQFS

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'MJQQFSHFN IUUQTHJUIVCDPNKOVOFNBLFSqJQQFS ϑϥά؅ཧͱ෼ذ੍ޚͷ࢓૊ΈΛఏڙͯ͘͠ΕΔ if Flipper.enabled?(:search) search_hoge else puts 'nothing...' end Flipper.enable(:search)

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อଘઌ͸HFNͰ੾Γସ͑ ྫ"DUJWF3FDPSEͰ%#ʹอଘ NJHSBUJPOϑΝΠϧ࡞੒ 'MJQQFSར༻࣌ʹ"EBQUFSΛࢦఆ ଞʹ΋3FEJT .POHP%#ͳͲͳͲ adapter = Flipper::Adapters::ActiveRecord.new flipper = Flipper.new(adapter) $ gem install flipper-active_record $ rails g flipper:active_record

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ݸผϢʔβʔରԠ΋؆୯ class User def flipper_id "User;#{id}" end end # ---- Flipper[:stats].enable(user) Flipper[:stats].enabled?(user) # true Flipper[:stats].disable(user) Flipper[:stats].enabled?(user) # false

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؅ཧ6*༻qJQQFSVJHFN

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ར༻ྫ $POUSPMMFS7JFXͰ࢖͍΍͍͢Α͏ϥοϓ CFGPSF@BDUJPOͳͲͰ0/0''֬ೝͯ͠ʹ͢ΔͳͲ module DarkLaunch extend ActiveSupport::Concern included do helper_method :authorized_feature? end private def authorized_feature?(sym) Flipper[sym].enabled? current_user end end

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৽ن1+ະ࣮૷1+ ಋೖݕ౼ͯ͠Έͯ͸ʂ

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'FBUVSF'MBH ڧΈɾऑΈ

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҆ఆͨ͠։ൃͷॿ͚ʹ ϒϥϯνΛຊମʹ߹ྲྀͤ͞΍͍͢ িಥ͕ى͖ͮΒ͍ ຊ൪؀ڥͰಈ࡞ݕূ͠΍͍͢ ΤϯυϢʔβʔʹެ։͢ΔϦεΫ͕େ෯ݮ ҆৺ײ

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੾Γ໭͕͠༰қ ΞϓϦɾ%#ͷϩʔϧόοΫ͸ෛՙ͕ߴ͍ 'FBUVSF'MBHͷ৔߹ϫϯλονͰ੾Γ໭͠׬ྃ

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҆શ͔͸࣮૷࣍ୈ ʮຊ౰ʹ'MBHͰ0/0''͢Δ͔ʁʯ͸࣮૷࣍ୈ ͪΌΜͱ୯ମςετ݁߹ςετ͠Α͏ ʮ$POUSPMMFS͸࠹͍͚ͩͲɺ  ɹผը໘͔ΒͷϦϯΫ͕࢒Δόά͕ʜʯͱ͔ ʮίʔυ͕σϓϩΠ͞ΕΔʯϦεΫ͸͋Δ ςετϦϦʔεઓུ͔ͬ͠ΓཱͯΑ͏

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ཞ༻͸Α͘ͳ͍ ͨͩͷ෼ذॲཧͳͷͰɺར༻Օॴ͕૿͑Δͱ൥ࡶʹͳΔɻ جຊ͸Ϣʔβʹݟ͑ͳ͍෦෼͔Βී௨ʹ࣮૷ͭͭ͠ɺ  ΤϯυϙΠϯτΛ࠹͍Ͱ͍͘ɹͱྑͦ͞͏ɻ 

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ର߅Ͱ͖ͳ͍τϥϒϧ΋͋Δ ྫ%#ϨΠϠʔͷ໰୊ ECNJHSBUF࣮ߦ ॏ͍ΫΤϦॲཧதʹ৽ػೳ޲͚ͷ"-5&35"#-&ൃߦ ଧͪͲ͜Ζ͕ѱ͘ॏཁͳςʔϒϧ͕ϩοΫ ˠαʔϏεஅ ϦϦʔε࣌ͷ໰୊͸ਚ͖ͳ͍ʜ

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·ͱΊ ػೳ0/0''ͷػߏΛ࡞ͬͯ޾ͤʹͳΖ͏ʂ 'FBUVSF'MBH ·ͨ͸'FBUVSF5PHHMF 3VCZͷ৔߹ʮ'MJQQFSʯͱ͍͏HFN͕࢖͑Δ ଞʹ΋ʮ3PMMPVUʯͱ͔͍Ζ͍Ζ ΋ͪΖΜࣗલ࣮૷Ͱ΋0,ʂ ҆શͳϦϦʔεͷʲಛޮༀʳͰ͸ͳ͍Αʂ