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エンジニアの立ち居振舞い
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Turn features on and off without deploys. Used by thousands of Ruby developers.
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TakashiOshikawa
November 16, 2016
Programming
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エンジニアの立ち居振舞い
社内LT用に作ったスライドです。
はてぶのお題「エンジニア立ち居振舞い」に触発されました。
TakashiOshikawa
November 16, 2016
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Transcript
ΤϯδχΞͷཱͪډৼ͍ @TakashiOshikawa
ࣗݾհ
ࣗݾհ ▸ ໊લ : ԡ ਹ ▸ ྸ : 22ࡀ
▸ ͖ͳݴޠ : Scala ▸ ϓϩάϥϛϯάΛ࢝Ίͨཧ༝ : ήʔϜ࡞Γ͔ͨͬͨ ▸ ӨڹΛड͚ͨຊ : Clean Coder ▸ GitHub/Qiita : TakashiOshikawa ※ֶͼ͕͋Δ
ࠓ͢ࣄ
ཱͪډৼ͍ ͱ֨ྑ͘ݴͬͯΈ͕ͨ…
ΤϯδχΞͱͯ͠ ҙ͍ࣝͯͬͯ͠Δ͜ͱ
ΤϯδχΞͱͯ͠ҙ͍ࣝͯͬͯ͠Δ͜ͱ ▸ ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ▸ ӕΛ͔ͭͳ͍ ▸ ҰਓͰԿ࣌ؒ·ͳ͍ ▸ ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ▸
͍͠ʹࠜؾڧ͘औΓΉ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ྫ͑
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ྫ͑ ޙʑʹͳΓͦ͏ͳMYSQLͷϢχʔΫΩʔ੍Λݟ͚ͭͯ͠ ·ͬͨ ΞΧϯ ෆ৹ͳΩʔ੍Λݟ͚ͭͨਓͷΠϥετ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ͜ͷ࣌ʹ·ͩͦͷΩʔ੍ͷൃੜ͍ͯ͠ͳ͔ͬͨͱ͢Δ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ͜ͷ࣌ʹ·ͩͦͷΩʔ੍ͷൃੜ͍ͯ͠ͳ͔ͬͨͱ͢Δ ʢ͜ΕΛࢦఠ͢ΔͱࣗͷλεΫ͕૿͑Δ…ʣ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ ͜ͷ࣌ʹ·ͩͦͷΩʔ੍ͷൃੜ͍ͯ͠ͳ͔ͬͨͱ͢Δ ʢ͜ΕΛࢦఠ͢ΔͱࣗͷλεΫ͕૿͑Δ…ʣ ʢΑ͠ɺҰ୴͓ͬͯ͜͏ʣ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ िؒޙ…
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ σΟϨΫλʔʣ Ұొͨ͠ΞυϨεͰొͰ͖ͯ͠·͏Μ Ͱ͚͢Ͳ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ தΛݟΔͱσʔλͷෆ߹͕ൃੜͯ͠͠·͍ͬͯͨ σʔλύʔςΟʔΛ͍ͯ͠ΔMySQLͷ֓೦
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ தΛݟΔͱσʔλͷෆ߹͕ൃੜͯ͠͠·͍ͬͯͨ ઈ͢ΔΤϯδχΞͷΠϥετ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ Ͳ͏͢Δ͖͔ͩͬͨ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ Ͳ͏͢Δ͖͔ͩͬͨ ΛνʔϜʹ “ڞ༗” ͠ɺղܾࡦΛߟ͑Δ͖ͩͬͨ
ݟ͚ͭͨΛ͓͔ͬͯͳ͍ Ͳ͏͢Δ͖͔ͩͬͨ ΛνʔϜʹ “ڞ༗” ͠ɺղܾࡦΛߟ͑Δ͖ͩͬͨ ͦͷ࣌ɺࣗͷλεΫ͕૿͑ͯ͠·͏͔͠Εͳ͍͕ ͕ى͖ͨ࣌ʹ͕ࣗରԠ͠ͳ͍ͱ͍͚ͳ͍࣌ؒΛߟ͑Δͱ ઌʹͬͯ͠·͏ํ͕ઈରʹָ
ӕΛ͔ͭͳ͍
ӕΛ͔ͭͳ͍ ਐḿͲ͏Ͱ͔͢ʁ
ӕΛ͔ͭͳ͍ ΦϯεέͰ͢ʂʂ
ӕΛ͔ͭͳ͍ ͦͯ͠ظલʹ…
ӕΛ͔ͭͳ͍ ͦͯ͠ظલʹ… ࣮શવΦϯεέͰͳ͘ɺ ͏Ͳ͏ؤுͬͯऴΘΒͳ͍ঢ়ଶʹͳ͍ͬͯͨ ݴ͍ग़ͤͳ͔ͬͨΤϯδχΞͷ࿏
ӕΛ͔ͭͳ͍ Ͳ͜ͰஅΛؒҧ͔ͬͨ
ӕΛ͔ͭͳ͍ ਐḿͲ͏Ͱ͔͢ʁ
ӕΛ͔ͭͳ͍ μϝͰ͢ʂʂ
ӕΛ͔ͭͳ͍ ૉʹݴ͍·͠ΐ͏
ӕΛ͔ͭͳ͍ ૉʹݴ͍·͠ΐ͏ ɹݴͬͨΒڪΒ͘νʔϜॿ͚ͯ͘ΕΔͣ ʢͦΕ͕ݴ͑ͳ͍νʔϜʹผͷ͕͋Γͦ͏ʣ
ҰਓͰԿ࣌ؒ·ͳ͍
ҰਓͰԿ࣌ؒ·ͳ͍ ͜ͷॲཧͲ͏ͳͬͯΜͩ͊ʙ ઈରࣗͰղܾͯ͠Δʂ(Ṗͷએݴ) ṖͷએݴΛ͢ΔΤϯδχΞ
ʙ3࣌ؒޙʙ
ҰਓͰԿ࣌ؒ·ͳ͍ ͨ͘͞Μॻ͍ͨྑ͍͚Ͳ… ࢥͬͨڍಈʹͳͬͯ͘Εͳ͍͠ίʔυ͙ͪΌ͙ͪΌ
ҰਓͰԿ࣌ؒ·ͳ͍ ͨ͘͞Μॻ͍ͨྑ͍͚Ͳ… ࢥͬͨڍಈʹͳͬͯ͘Εͳ͍͠ίʔυ͙ͪΌ͙ͪΌ ࡞ۀ͕ਐ·ͳ͍··1͕ऴΘΔ ͜͏͍͏ܦݧ͋Γ·͢ΑͶʁ ਐḿ͕μϝͳΤϯδχΞ
ҰਓͰԿ࣌ؒ·ͳ͍ ԿނਓؒࣗͰͬͯ͘એݴΛͯ͠͠·͏ͷ͔
ҰਓͰԿ࣌ؒ·ͳ͍ ԿނਓؒࣗͰͬͯ͘એݴΛͯ͠͠·͏ͷ͔ ʢ͚ࣗͩͰղܾͰ͖ͨΒධՁ্͕Γͦ͏ʣ ʢԶͷྗͳΒΠέΔ…ʂʣ
ҰਓͰԿ࣌ؒ·ͳ͍ ԿނਓؒࣗͰͬͯ͘એݴΛͯ͠͠·͏ͷ͔ ʢ͚ࣗͩͰղܾͰ͖ͨΒධՁ্͕Γͦ͏ʣ ʢԶͷྗͳΒΠέΔ…ʂʣ ͦ͏ࢥ͍ࠐΜͰશମతʹੜ࢈ੑΛԼ͛ͯ͠·͏
ҰਓͰԿ࣌ؒ·ͳ͍ ԿނਓؒࣗͰͬͯ͘એݴΛͯ͠͠·͏ͷ͔ ʢ͚ࣗͩͰղܾͰ͖ͨΒධՁ্͕Γͦ͏ʣ ʢԶͷྗͳΒΠέΔ…ʂʣ ͦ͏ࢥ͍ࠐΜͰશମతʹੜ࢈ੑΛԼ͛ͯ͠·͏ ແବ
ҰਓͰԿ࣌ؒ·ͳ͍ ઃܭஈ֊ϋϚΓͦ͏ͳՕॴࣄલʹνʔϜϝϯόʔʹ૬ஊ
ҰਓͰԿ࣌ؒ·ͳ͍ ઃܭஈ֊ϋϚΓͦ͏ͳՕॴࣄલʹνʔϜϝϯόʔʹ૬ஊ ※ͨͩҙ͠ͳ͍ͱ͍͚ͳ͍ͷԿͰߟ͑ͣʹฉ͍ͯ͠·͏ ͷϚζ͍ͷͰҙ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ೲಘͷ͍͔ͳ͍(Ϋιͭ·Μͳͦ͏ͳ)ػೳͷ࣮ʹͳͬͨ ͨͩ͜Εࣄͩ͠Βͳ͍༁ʹ͍͔ͳ͍
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ೲಘͷ͍͔ͳ͍(Ϋιͭ·Μͳͦ͏ͳ)ػೳͷ࣮ʹͳͬͨ ͨͩ͜Εࣄͩ͠Βͳ͍༁ʹ͍͔ͳ͍ ײΛແʹ͠ਖ਼͍͠ಈ࡞Λߦ͏ίʔυΛॻ͘Ϛγʔϯʹ ؼΓ͍ͨ ແײۦಈͷΤϯδχΞ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ͦͷը໘Ͱਖ਼͘͠ಈ͍ͨ ͔͠͠
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ͦͷը໘Ͱਖ਼͘͠ಈ͍ͨ ͔͠͠ ͦͷػೳͷӨڹൣғͳΜͯؾʹͯ͠ͳ͍ͷͰɺ ࣮ଞͷՕॴͰσάϨ͕ى͖͍ͯͨ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ͦͷը໘Ͱਖ਼͘͠ಈ͍ͨ ͔͠͠ ͦͷػೳͷӨڹൣғͳΜͯؾʹͯ͠ͳ͍ͷͰɺ ࣮ଞͷՕॴͰσάϨ͕ى͖͍ͯͨ ͳ͔ͥ ʹʼɹڵຯ͕ͳ͔͔ͬͨΒଞͷը໘ͳΜͯؾʹ͠ͳ͔ͬͨ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ গͳ͘ͱڵຯΛ࣋ͭʹͲ͏͍͏ߦಈΛऔΔ͖ʁ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ গͳ͘ͱڵຯΛ࣋ͭʹͲ͏͍͏ߦಈΛऔΔ͖ʁ ·࣮ͣʹೖΔલ / ༷͕ܾ·Δલʹ͠߹ͬͯɺͦͷػೳͷ ඞཁੑʹ͍ͭͯ֬ೝ͓ͯ͘͠ ҙຯ͕͋Δ͔͔Βͳ͍ػೳͷ࣮΄ͲΔؾͷग़ͳ͍ࣄͳ ͍ ͓ޓ͍͕ೲಘͰ͖ͨΒͦͷػೳΛ࣮࣋ͬͯ͢Δ
ࣗͷ͍ͬͯΔࣄʹؔ৺Λ࣋ͭ ΤϯδχΞ࣮͢Δͷ͕ࣄ͕ͩɺશʹܾΊ͚ͭͨ͜ͱΛ ͛ΔͷͰͳ͘νʔϜͰ͠߹͏ػձΛઃ͚Α͏ εϓϦϯτܭըʹೲಘ͍ͯ͠ΔνʔϜ
͍͠ʹࠜؾڧ͘औΓΉ
͍͠ʹࠜؾڧ͘औΓΉ ઌఔͷʮҰਓͰԿ࣌ؒ·ͳ͍ʯͱਅٯͷ͜ͱΛݴ͍ͬͯΔ Α͏ͳ… Ͱ͜ͷ͍ΤϯδχΞਓੜͷதͰԿճܦݧ͍ͯ͠Δෆࢥٞ ͳࣄͳͷͰݴΘ͍ͤͯͩ͘͞
͍͠ʹࠜؾڧ͘औΓΉ ઈରग़དྷͳͦ͞͏ͳΛఘΊͣʹԿճߟ͑͢ ※ओʹఆ࣌ޙ ͜Ε͕͘͢͝େ
͍͠ʹࠜؾڧ͘औΓΉ Έͳ͞Μ͜Μͳܦݧ͋Γ·ͤΜ͔ʁ ͔Βͳ͍ʹૺ۰͢Δ
͍͠ʹࠜؾڧ͘औΓΉ Έͳ͞Μ͜Μͳܦݧ͋Γ·ͤΜ͔ʁ ͔Βͳ͍ʹૺ۰͢Δ ࣮ͯ͠Έ͕ͨશવਖ਼͘͠ಈ͔ͳͦ͏ͩ…ϝϯλϧͷࢮ ϝϯλϧͷࢮ
͍͠ʹࠜؾڧ͘औΓΉ git stashͰίʔυ͕·ͱͳঢ়ଶ·ͰޙΓ ͜͜ͰఘΊͣʹ͏Ұผͷํ๏Ͱߟ͑ͯ͠ΈΔ ʢ2ʙ3ճͷϧʔϓʣ
͍͠ʹࠜؾڧ͘औΓΉ git stashͰίʔυ͕·ͱͳঢ়ଶ·ͰޙΓ ͜͜ͰఘΊͣʹ͏Ұผͷํ๏Ͱߟ͑ͯ͠ΈΔ ʢ2ʙ3ճͷϧʔϓʣ ͏ؼΖ͏…ͱࢥͬͨॠؒٸʹ࣮ํ๏Λર͘ʂʂ ײಈͷ͋·ΓྦΛྲྀ͢ϓϩάϥϚ
͍͠ʹࠜؾڧ͘औΓΉ git stashͰίʔυ͕·ͱͳঢ়ଶ·ͰޙΓ ͜͜ͰఘΊͣʹ͏Ұผͷํ๏Ͱߟ͑ͯ͠ΈΔ ʢ2ʙ3ճͷϧʔϓʣ ͏ؼΖ͏…ͱࢥͬͨॠؒٸʹ࣮ํ๏Λર͘ʂʂ ɹ ແࣄ࣮ྃ υϠإͷϓϩάϥϚ Ͳ͊
͍͠ʹࠜؾڧ͘औΓΉ ͜ͷఘΊͣʹߟ͑ͯ͠ΈΔߦҝΛଓ͚ΔͱΧϧϚ͕ஷ·Δ
͍͠ʹࠜؾڧ͘औΓΉ ͜ͷఘΊͣʹߟ͑ͯ͠ΈΔߦҝΛଓ͚ΔͱΧϧϚ͕ஷ·Δ ΧϧϚ͕ஷ·ΔͱͲ͏ͳΔ͔
͍͠ʹࠜؾڧ͘औΓΉ ͜ͷఘΊͣʹߟ͑ͯ͠ΈΔߦҝΛଓ͚ΔͱΧϧϚ͕ஷ·Δ ΧϧϚ͕ஷ·ΔͱͲ͏ͳΔ͔ => ર͖ͱҾ͖͑Δ͜ͱ͕ग़དྷΔ ΧϧϚ͕ஷ·Γ͖ͬͨॠؒͷϓϩάϥϚ
͍͠ʹࠜؾڧ͘औΓΉ ͜ͷఘΊͣʹߟ͑ͯ͠ΈΔߦҝΛଓ͚ΔͱΧϧϚ͕ஷ·Δ ΧϧϚ͕ஷ·ΔͱͲ͏ͳΔ͔ => ર͖ͱҾ͖͑Δ͜ͱ͕ग़དྷΔ ͔ͩΒ࣮ෆՄೳͱࢥͬͯ ՄೳੑΛ୳ΔͨΊʹखΛಈ͔ͯ͠Έ·͠ΐ͏ ΧϧϚ͕ஷ·Γ͖ͬͨॠؒͷϓϩάϥϚ
·ͱΊ
·ͱΊ ▸ ૉʹͳΖ͏ ▸ νʔϜΛཔΖ͏ ▸ αʔϏεʹؔ৺Λ࣋ͱ͏ ▸ ΧϧϚΛஷΊΑ͏
࠷ޙʹ
୭͔ఆ࣌ޙʹಡॻձ͠·ͤΜ͔ʁ
୭͔ఆ࣌ޙʹಡॻձ͠·ͤΜ͔ʁ ॳճ Web API Good Parts APIΛ࡞Δ࣌ͷϕετϓϥ ΫςΟε͕ॻ͍ͯ͋Δ དྷिͷͲ͔͜ͰͲ͏Ͱ͠ΐ ͏ɺશମͰྲྀ͠·͢ʂ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠