リクルートテクノロジーズの技術動向

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

2. Twitter: @yosuke_furukawa Github: yosuke-furukawa

3. 2018/11/23 - 24 Node ֶԂࡇ։࠵

4. JS Quiz

5. ҎԼͷ৚݅Λຬͨ͢ a objectΛ ࡞ͬͯΈΔ var a = { // ?

   } if ( (a >= 1 && a <= 2) && (a >= 3 && a <= 4) && (a >= 5 && a <= 6) ) { console.log('pass') }

6. 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') }

7. ϦΫϧʔτςΫϊϩδʔζͷ ٕज़બఆ

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

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

10. ׂͱͨ͘͞Μͷٕज़Λ࢖ͬͯ ͍Δɻ

11. ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP
    4FSWJDF .JDSP
    4FSWJDF

    .JDSP
    4FSWJDF

12. ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP
    4FSWJDF .JDSP
    4FSWJDF

    .JDSP
    4FSWJDF ͜ͷαʔό͸)5.-Λ࡞ͬ ͨΓɺ"1*Λ·ͱΊͨΓɺηο γϣϯ؅ཧͨ͠Γ͢Δ

13. ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP
    4FSWJDF .JDSP
    4FSWJDF

    .JDSP
    4FSWJDF ͬͪ͜͸"1*αʔόɺ%#ͱ ઀ଓͨ͠ΓɺpMFॻ͖ग़ͨ͠ Γɺ֎෦"1*ͱܨ͍ͩΓɻ

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

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

16. ϦΫϧʔτςΫϊϩδʔζͷඪ ४తͳߏ੒ • Backend For Frontends #SPXTFS #'' .JDSP
    4FSWJDF .JDSP
    4FSWJDF

    .JDSP
    4FSWJDF ͬͪ͜͸/PEFKTͰॻ͍ͯΔ ͬͪ͜͸+BWB
    PS
    (PͰॻ͍ ͯΔɻ

17. ϦΫϧʔτςΫϊϩδʔζ • ϑϩϯτΤϯυ͸Node.jsͰॻ͘ • Express, webpack, babel, etc etc •

    όοΫΤϯυ͸Go or JavaͰॻ͘ʢঃʑʹGo Λ૿΍ͯ͠Δ࠷தʣ • echo, DI container, Πϯϑϥܥπʔϧ etc etc

18. ଟछଟ༷ͳٕज़Λ࢖ͬͯ໨ͷ લʹ͋Δ՝୊Λղܾ͍ͯ͘͠

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

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

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

22. ͜͏͍͏ਓΛ΋ͬͱ૿΍ͯ͠ ͍͖͍ͨ͠ɺ͜͏͍͏ࣄྫΛ ΋ͬͱ૿΍͍ͨ͠

23. ๻͸Ͳ͏͍ͯ͠Δ͔

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

    Java ݚमଔۀੜʂʂ

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

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

27. ݚमड͚௚ͯ͠Έͯ

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

29. ਃ͠༁ఔ౓ͷ Node.js࠷৽ಈ޲

30. Node.js v10.5.0 released • Worker (Thread)͕ೖͬͨ • Node.js ͸͜Ε·Ͱsingle thread͕ͩͬͨɺ

    Multi Threadϓϩάϥϛϯά΋ग़དྷΔΑ͏ʹ • ࠷ۙ͸Node.js΋CPUϔϏʔͳॲཧ͕૿͖͑ͯ ͨ

31. Node.js has various use cases

32. Node.js has various use cases &WFSZ
    UPPMTGSBNFXPSLT
    IBT
    $16
    JOUFOTJWF
    UBTLT

33. History of concurrent Node.js /PEFKT #FGPSF
    W
    4JOHMF
    1SPDFTT
    4JOHMF
    5ISFBE

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

    $IJME
    1SPDFTT $IJME
    1SPDFTT

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

    $IJME
    1SPDFTT $IJME
    1SPDFTT .BTUFS
    1SPDFTT
    
    DBO
    GPSL
    DIJME
    QSPDFTT
    W

36. History of concurrent Node.js /PEFKT
    .BTUFS
    1SPDFTT 8PSLFS 8PSLFS 8PSLFS 8PSLFS

    8PSLFS 8PSLFS

37. History of concurrent Node.js /PEFKT
    .BTUFS
    1SPDFTT 8PSLFS 8PSLFS 8PSLFS 8PSLFS

    8PSLFS 8PSLFS Ϛελʔϓϩηε͔Β8PSLFS
    5ISFBEΛىಈ͢ΔɺεϨου ͳͷͰϓϩηεΑΓ͸ىಈ͸ܰྔɻ

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

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

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

41. Result pMF
    OVNCFST CBCFMDPSF
    VTJOH
    TJOHMF
    UISFBE CBCFMDPSF
    VTJOH
    DIJME
    QSPDFTT
    
    CBCFMDPSF
    VTJOH
    XPSLFS 

    NT NT NT  NT NT NT  NT NT NT  NT NT NT  NT NT NT

42. Node.js Worker Λ࢖ͬͯ৽͠ ͍ϥΠϒϥϦΛ࡞͍ͬͯ͘ • SSRͷߴ଎Խ • babel, webpackͷߴ଎Խ etc

    • ϦΫϧʔτςΫϊϩδʔζͰ͸৽͍ٕ͠ज़Λݚ ڀ՝୊ͱͯ͠৽͍͠औΓ૊ΈΛ͍ͯ͘͠ɻ

43. Thank you!!