node.js in java OB

Java/Go OB会で話したNode.jsの話です。

Transcript

1. Node.js ୈ࢛ճ Java ݚम OB/OG ձ
2. Twitter: @yosuke_furukawa Github: yosuke-furukawa
3. Node.js೔ຊϢʔβʔάϧʔϓ୅ද Node.js Evangelist / Node.js Collaborator
4. +BWBݚमͷ࣌ͷ՝୊༻ͷ
   ΩϟϥΫλʔͰͨ͠
5. Why I use Node.js
6. ΋ͱ΋ͱ͸
   αʔόαΠυͷΤϯδχΞ
   0SBDMF
   +BWB
   40"1
   MVDFOF
   FUD
7. #SPXTFS 4USVUT "1*
   4FSWFS 0SBDMF -VDFOF 'JMF
   4ZTUFN ΋ͱ΋ͱ͸͜ͷล୲౰
8. ๞͖ͪΌͬͨ
9. #SPXTFS 4USVUT "1*
   4FSWFS 0SBDMF -VDFOF /'4 ͬͪ͜ͷํΛ΍Γͨ͘ͳͬͨ
10. ཁ͸6*دΓͷॴΛ΍ͬͯ Έͨ͘ͳͬͨ ౰࣌ ೥ࠒ ͔Β+BWB4DSJQUͷٕज़͕8FC ΞϓϦ࡞੒ʹ͸ඞਢʹͳ͍ͬͯͨɻ
    Ͱ΋͍͖ͳΓ
    +BWB4DSJQU
    Ͱ
    6*
    ͷͱ͜Ζ΍ͬͯ ΋Α͘෼͔Βͳͦ͞͏ͩͱࢥͬͨɻ
    ͳͷͰͻͱ·ͣΑ͘஌ͬͯΔαʔόαΠυͰ +BWB4DSJQUֶΜͰΈΑ͏ͱɻ
12. ໘നͦ͏΍Μ͚
13. HTTP Server
14. HTTP Server const http = require('http'); const hostname = '127.0.0.1'; const port = 3000; const server = http.createServer((req, res) => { res.statusCode = 200; res.setHeader('Content-Type', 'text/plain'); res.end('Hello World\n'); }); server.listen(port, hostname, () => { console.log(`Server running at http://${hostname}:${port}/`); }); ͜Ε͚ͩͰಈ͘खܰ͞
15. ָ͍͠ʂʂʂ
16. Realtime Server
17. socket.io-video
18. IoT
20. Desktop Application (Electron)
22. Node.js
23. 13΍ษڧձͳͲͷߩݙ͕ೝΊΒΕͯ
    /PEFKT
    $PMMBCPSBUPS/PEFKT
    &WBOHFMJTU ʹͳΔɻ
24. Node.js ͱ͸Կ͔
25. 2001 2008 2009 2010 2011 2012 2015ʙ /PEFKT
    JT
    CPSO
26. 3ZBO
    %BIM
    
    5IF
    'BUIFS
    PG
    /PEF
27. Ryan Dahl talks about Node.js in JSConf.eu 2009
29. Node.js in brief • Server-Side JavaScript • Evented, Non-Blocking I/O Similar to EventMachine • Built on Google’s V8
30. Node.js in brief • Server-Side JavaScript • Evented, Non-Blocking I/O Similar to EventMachine • Built on Google’s V8 8IZ
    /PEF
    DIPPTF
    UIFTF
    BSDIJUFDUVSF
31. 2001 2008 2009 2010 2011 2012 2015ʙ $,
    1SPCMFN
32. ೔ຊͰ΋
    ʮ8FCͷઌʹ͋Δ$,໰୊ʯ
    ͱ͔هࣄ͕͔͔ΕΔ
33. $,
    1SPCMFN
    JT
     w ͪΐʔͨ͘͞ΜͷΫϥΠΞϯτ ,୆ ͕Ұ౓ʹ઀ଓ ͨ͠Βαʔόʔࢮ͵ΑͶ͍ͬͯ͏໰୊
    w ౰࣌ͷϑϩϯτ͸"QBDIF͕ओྲྀ
    w "QBDIF͸ϓϩηεεϨουϞσϧ
    w ΫϥΠΞϯτ͕઀ଓ͢Δ౓ʹϓϩηε
    PS
    εϨου͕ ্͕ΔͱϝϞϦ࢖͍·͘ΒΕͯɺɺɺ
 ޙ͸෼͔Δͳɻ
34. ͜ͷ࣌ͷΈΜͳͷ൓Ԡ
    ʮ୆Ͱ,΋͞͹͔Ͷʔ͠XXXXʯ
35. γϯϓϧͳIUUQϦΫΤετͳΒ
    ͦ͏ͩͱࢥ͏ɻ
36. 8FC࣌୅͸4/4࣌୅
37. Ϣʔβʔ͕αΠτʹ଺ࡏ͢Δ ͕࣌ؒ૿͑Δ࣌୅ ϝοηʔδ͕དྷ·ͨ͠ ͍͍Ͷ͞Ε·ͨ͠
38. "KBY
    ͱ͔9)3
    -POH
    1PMMJOH
    ͕ྲྀߦΓ͸͡Ίͨ࣌୅
39. $POOFDUJPO͕ଟ͘ͳͬͯैདྷͷΞʔΩς ΫνϟͰ͸·͔ͳ͖͑Εͳ͘ͳ͖ͬͯͨ
41. "QBDIF
    WT
    /HJOY "QBDIF /HJOY XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS
    
42. "QBDIF
    WT
    /HJOY "QBDIF /HJOY XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS
    ϦΫΤετͷ౓ʹXPSLFSεϨου͕ىಈ ͠ɺϝϞϦ͕ඡഭ͞ΕΔڪΕɺ·ͨεϨου ͕ଟ͍ͱεϨου੾Γସ͑΋ίετߴ͍
43. "QBDIF
    WT
    /HJOY "QBDIF /HJOY XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS XPSLFS
    γϯάϧεϨουͳͷͰίωΫγϣϯ͕ ͨ͘͞Μ͋ͬͯ΋XPSLFS͸ىಈ͠ͳ͍
    Ϧιʔε͕ޮ཰త
44. ͜Μͳײ͡Ͱ$,͕૽͕Ε͔ͯΒ
 Πϕϯτϧʔ ϓϞσϧ͕ྲྀߦΓͩ͢ɻ
45. "OZ&WFOU
    1FSM
     &WFOU.BDIJOF
    3VCZ
     5XJTUFE
    1ZUIPO
     ͜Μͳײ͡Ͱ$,͕૽͕Ε͔ͯΒ
 Πϕϯτϧʔ ϓϞσϧ͕ྲྀߦΓͩ͢ɻ
46. ͨͩ͠ɺ͜ΕΒͷݴޠ 3VCZ
    1ZUIPO ʹ͸
    طʹ'JMF
    ΍/FUXPSL*0ͷಉظॲཧ͕ଘࡏ͢ Δ
47. 'JMF/FUXPSL
    *0ॲཧ͸஗͍
48. 'JMF/FUXPSL
    *0ॲཧ͸஗͍
49. &WFOU-PPQ ͕͔͔࣌ؒΔϑΝΠ ϧ*0΍ωοτϫʔΫ ܥͷॲཧ͸ग़དྷΔݶ Γඇಉظʹ͢Δ΂͖ɻ
50. ΠϕϯτϧʔϓϞσϧ͸ྑ͍͕ɺط ଘͷ*0ಉظܥͷॲཧ͸ແ͍ͨ͘͠ɻ
    ඇಉظ*0ॲཧΛڧ੍͍ͤͨ͞ɻ
51. ඇಉظϥΠϒϥϦͱͯ͠MJCFW͕࠾༻͞Εɺ ޙʹMJCVWͱͳΓɺϚϧνϓϥοτϑΥʔ ϜͰ΋ߴ଎ͳඇಉظ*0͕࣮ݱ͞ΕΔ
52. 2001 2008 2009 7
    JT
    CPSO
  2010 2011 2012 2013 2014
53. function hoge() { console.log(“Hello Hello”); } function fuga() { // fugafufa console.log(“World World”); } +BWB4DSJQU ͜Ε·Ͱ ߏจղੳ > Hello Hello > World World ࣮ߦ
54. function hoge() { console.log(“Hello Hello”); } function fuga() { // fugafufa console.log(“World World”); } +BWB4DSJQU ͜Ε·Ͱ ߏจղੳ > Hello Hello > World World ࣮ߦ ஗͍
55. function hoge() { console.log(“Hello Hello”); } function fuga() { // fugafufa console.log(“World World”); } +BWB4DSJQU 7 > Hello Hello > World World ಈతʹϚγϯޠʹม׵ 0100101 0010010 1010101 0101010 1010100 ࣮ߦ ΊͬͪΌ଎͍
56. $,Λղܾ͢ΔΠϕϯτϧʔϓϞσϧ
    ߴ଎ͳඇಉظ*0ͱͦΕΛڧ੍Մೳͳݴޠ
    ௒ઈ଎͍ॲཧܥ
57. $,Λղܾ͢ΔΠϕϯτϧʔϓϞσϧ
    ߴ଎ͳඇಉظ*0ͱͦΕΛڧ੍Մೳͳݴޠ
    ௒ઈ଎͍ॲཧܥ 3ZBO
    %BIM͕ඞཁͱͯ͠ ͍ͨ΋ͷɻ
58. ͔ͯ͘͠/PEFKTੜ஀
59. /PEFKTͱ͸Կͳͷ͔ ඇಉظϥΠϒϥϦͱΠϕϯτϧʔϓϞσϧͰಈ͘ߴ ଎͔ͭলϦιʔεͳ+BWB4DSJQU࣮ߦ؀ڥ
    8FC4PDLFUɺ44&ͷΑ͏ʹίωΫγϣϯΛுΓͬͺ ͳ͠ʹ͢ΔϞϊɺϦΫΤετ͕ଟ͍ΞϓϦέʔγϣ ϯͱ਌࿨ੑ͕ߴ͍ɻ
    ԿʹͰ΋޲͘ϫέ͡Όͳ͍ɻ౰વ޲͔ͳ͍෺͸͋Δɻ /PEFKT͚ͩͰແཧΛ͠ͳ͍ࣄ͸ॏཁɻదࡐదॴͰ ࢖͍෼͚ͨํ͕ྑ͍ͱ͍͏࿩ɻ
60. ·ͱΊ
61. /PEFKT
    ͱ
    ࢲ
    /PEFKTΛ৮Γ࢝Ίͯ6*ଆ΋όοΫΤϯυଆ΋Θ͔ΔΤ ϯδχΞʹɻ
    ΍ΔͳΒͱ͜ͱΜɺͱ͍͏͜ͱͰ৽͍ٕ͠ज़͕ग़ͯ͘Δ ͨͼʹ৮͍ͬͯͨ݁Ռɺ&WBOHFMJTU$PMMBCPSBUPSʹ
    /PEFKTͱ͸Կ͔
    ඇಉظϥΠϒϥϦͱΠϕϯτϧʔϓϞσϧͰಈ͘ߴ଎͔ ͭলϦιʔεͳ+BWB4DSJQU࣮ߦ؀ڥ ·ͱΊ
62. JavaษڧձOBͱͯ͠
63. ඇৗʹษڧʹͳͬͨ
    ಛʹԿ͔࡞ͬͯݟͤΔ෦෼͸͘͢͝ྑ͔ͬͨ
    ͋ͱɺ
    &⒎FDUJWF
    +BWB
    ͷ಺༰͸ࠓͰ΋Α͘࢖ ͍·͢ +BWB4DSJQUͰ΋ֶ΂Δॴ͸ଟ͍ ɻ
    ࣲా͞Μ͕
    +BWB
    
    ͷߨࢣͱͯ͠ϦΫϧʔτςΫ ϊϩδʔζͰ৽ਓͷ໘౗Λݟͯ͘Εͳ͍͔ͱࢥͬ ͯͨΓɻ JavaษڧձOB