リクルートテクノロジーズの技術動向

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ϦΫϧʔτςΫϊϩδʔ ζͷٕज़બఆ 2018/06/30 @ freee גࣜձࣾ / Java/GoݚमOBձ

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Twitter: @yosuke_furukawa Github: yosuke-furukawa

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2018/11/23 - 24 Node ֶԂࡇ։࠵

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JS Quiz

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ҎԼͷ৚݅Λຬͨ͢ a objectΛ ࡞ͬͯΈΔ var a = { // ? } if ( (a >= 1 && a <= 2) && (a >= 3 && a <= 4) && (a >= 5 && a <= 6) ) { console.log('pass') }

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ճ౴ var a = { i: 1, valueOf() { return this.i++ } } if ( (a >= 1 && a <= 2) && (a >= 3 && a <= 4) && (a >= 5 && a <= 6) ) { console.log('pass') }

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ϦΫϧʔτςΫϊϩδʔζͷ ٕज़બఆ

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Java Node.js Go ϦΫϧʔτςΫϊϩδʔζͰ࢖ͬͯΔαʔόα Πυݴޠ Ruby Erlang Clojure Kotlin Python

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Java Node.js Go ϦΫϧʔτςΫϊϩδʔζͰ࢖ͬͯΔαʔόα Πυݴޠ Ruby Erlang Clojure Kotlin Python

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ׂͱͨ͘͞Μͷٕज़Λ࢖ͬͯ ͍Δɻ

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ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF

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ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ͜ͷαʔό͸)5.-Λ࡞ͬ ͨΓɺ"1*Λ·ͱΊͨΓɺηο γϣϯ؅ཧͨ͠Γ͢Δ

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ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ͬͪ͜͸"1*αʔόɺ%#ͱ ઀ଓͨ͠ΓɺpMFॻ͖ग़ͨ͠ Γɺ֎෦"1*ͱܨ͍ͩΓɻ

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ͦΕͧΕ޲͖ɾෆ޲͖͕͋Δ • BFF • HTMLΛ࡞ΔखલɺϑϩϯτΤϯυΤϯδχ Ξ͕৮Γ΍͍͢γεςϜͰ͋Δඞཁ͕͋Δ • APIΛͨ͘͞Μ౤͛ΔͷͰɺඇಉظϑϨϯυ ϦʔͰ͋ͬͯ΄͍͠

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ͦΕͧΕ޲͖ɾෆ޲͖͕͋Δ • Backend • ϏδωεϩδοΫͱDBΞΫηε͕ଟ͍ • τϥϯβ͘γϣφϧͳॲཧͱ͖ͬͪΓͨ͠ ྫ֎ϋϯυϦϯά • ʢܕ͕΄͍͠ʣ

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ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP4FSWJDF .JDSP4FSWJDF .JDSP4FSWJDF ͬͪ͜͸/PEFKTͰॻ͍ͯΔ ͬͪ͜͸+BWBPS(PͰॻ͍ ͯΔɻ

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ϦΫϧʔτςΫϊϩδʔζ • ϑϩϯτΤϯυ͸Node.jsͰॻ͘ • Express, webpack, babel, etc etc • όοΫΤϯυ͸Go or JavaͰॻ͘ʢঃʑʹGo Λ૿΍ͯ͠Δ࠷தʣ • echo, DI container, Πϯϑϥܥπʔϧ etc etc

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ଟछଟ༷ͳٕज़Λ࢖ͬͯ໨ͷ લʹ͋Δ՝୊Λղܾ͍ͯ͘͠

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GoͰDI container • DI ContainerΛϝϯόʔ͕࡞ͬͯ͘Εͨ ෳ਺ͷ+BWBΤϯδχΞʹ(PΛॻ͔ͤΔͨΊɺςετ Λॻ͖΍͘͢͢ΔͨΊ

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PythonͰBig Queryͷςετ πʔϧ • bqspecΛϝϯόʔ͕࡞ͬͯ͘Εͨ • yamlͰsqlͷϦΫΤετͱ໭Γ஋ͷνΣοΫΛ ॻ͘͜ͱ͕Ͱ͖Δπʔϧ #JH2VFSZΛॻ͘σʔλΞφϦετͷφϨοδΛς ετͱ͍͏ܗͰܗࣜԽ͢ΔͨΊ

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Node.jsͰAPI mock/stub • BFFͱόοΫΤϯυͰAPI௨৴Λstub͢ΔϞ δϡʔϧΛ࡞ͬͯΔ "1*ͷTUVCʹ΋ͳΓɺόοΫΤϯυͷαʔόʹ͸ς ετΫϥΠΞϯτʹ΋ͳΔπʔϧΛ։ൃ

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͜͏͍͏ਓΛ΋ͬͱ૿΍ͯ͠ ͍͖͍ͨ͠ɺ͜͏͍͏ࣄྫΛ ΋ͬͱ૿΍͍ͨ͠

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๻͸Ͳ͏͍ͯ͠Δ͔

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άϧʔϓϚωʔδϟͱͯ͠ҰԠ શ෦೺Ѳ͢ΔΑ͏ʹ͍ͯ͠Δ • Node.js͚ͩ͡Όͳ͘ɺGo΋ɻ • ୈ6ظ Go ݚम(ϥΠτ൛)डߨੜ • ͪͳΈʹୈNظ Java ݚमଔۀੜʂʂ

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ݚमͱ͍͏ܗͰجૅྗ޲্Λఏڙ͠ɺ ࣮Ҋ݅ͱ͍͏ܗͰԠ༻ྗ޲্ͤ͞Δ • ݚम͸جຊతʹϝϯόʔʹ͸ड͚ͤ͞ΔΑ͏ ʹ͍ͯ͠Δ • طʹ2໊ଔۀɺ1໊डߨதɺདྷظ͸͞Βʹ૿ ΍͢ɻ • Ҋ݅Ͱ΋GoΛ࠾༻͍ͯ͠Δʢ૿΍ͯ͠Δʣ

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ݚमड͚௚ͯ͠Έͯ • 1೥໨ͰJavaݚमड͚ͯͨͱ͖͸ࢹ໺΋ڱ͔ͬ ͨɻ • ։ൃܦݧΛੵΜͰ͔Βࠓͳࣲ͓ా͞ΜͷGoݚ मΛड͚Δͱ࣭໰Ͱ͖Δ͜ͱ͕ҧ͏ɻ

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ݚमड͚௚ͯ͠Έͯ

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ݚमड͚௚ͯ͠Έͯ • ܦݧΛੵΜͰ͔Βฉ͚Δ͜ͱ͕૿͑ͯࠓͳ͓ ָ͍͠ɻ • ձࣾʹࣲా͞ΜΛݺΜͰݚमड͚ͤͯ͞΋Β ͓͏ɻ • ࣗ෼͕1೥໨Ͱड͚ͨྑ͔ͬͨ͜ͱ͸ϝϯόʔ ʹ΋ܦݧͯ͠΋Β͍͍ͨ

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ਃ͠༁ఔ౓ͷ Node.js࠷৽ಈ޲

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Node.js v10.5.0 released • Worker (Thread)͕ೖͬͨ • Node.js ͸͜Ε·Ͱsingle thread͕ͩͬͨɺ Multi Threadϓϩάϥϛϯά΋ग़དྷΔΑ͏ʹ • ࠷ۙ͸Node.js΋CPUϔϏʔͳॲཧ͕૿͖͑ͯ ͨ

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Node.js has various use cases

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Node.js has various use cases &WFSZUPPMTGSBNFXPSLTIBT$16JOUFOTJWFUBTLT

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History of concurrent Node.js /PEFKT #FGPSFW 4JOHMF1SPDFTT 4JOHMF5ISFBE

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History of concurrent Node.js /PEFKT .BTUFS1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT

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History of concurrent Node.js /PEFKT .BTUFS1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT $IJME 1SPDFTT .BTUFS1SPDFTT DBOGPSLDIJMEQSPDFTT W

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History of concurrent Node.js /PEFKT .BTUFS1SPDFTT 8PSLFS 8PSLFS 8PSLFS 8PSLFS 8PSLFS 8PSLFS

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History of concurrent Node.js /PEFKT .BTUFS1SPDFTT 8PSLFS 8PSLFS 8PSLFS 8PSLFS 8PSLFS 8PSLFS Ϛελʔϓϩηε͔Β8PSLFS5ISFBEΛىಈ͢ΔɺεϨου ͳͷͰϓϩηεΑΓ͸ىಈ͸ܰྔɻ

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babel-core using single thread. target ﬁles (ES6) transpiled code (ES5)

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babel-core using child_process .BTUFS target ﬁles Send File transpiled

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babel-core using Worker /PEFKT .BTUFS target ﬁles transpiled Send File

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Result pMF OVNCFST CBCFMDPSF VTJOHTJOHMFUISFBE CBCFMDPSF VTJOHDIJMEQSPDFTT CBCFMDPSF VTJOHXPSLFS NT NT NT NT NT NT NT NT NT NT NT NT NT NT NT

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Node.js Worker Λ࢖ͬͯ৽͠ ͍ϥΠϒϥϦΛ࡞͍ͬͯ͘ • SSRͷߴ଎Խ • babel, webpackͷߴ଎Խ etc • ϦΫϧʔτςΫϊϩδʔζͰ͸৽͍ٕ͠ज़Λݚ ڀ՝୊ͱͯ͠৽͍͠औΓ૊ΈΛ͍ͯ͘͠ɻ

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Thank you!!