JS RPCを理解する

Cloudflare Meet-up Osaka #4
May 17, 2024. Yusuke Wada

Transcript

1. +4
   31$Λཧղ͢Δ $MPVE fl BSF
   .FFUVQ
   0TBLB
   
   .BZ
   
   
   :VTVLF
   8BEB
2. ࣗݾ঺հ w :VTVLF
   8BEB
   w 8FC
   GSBNFXPSL
   EFWFMPQFS
   w %FWFMPQFS
   "EWPDBUF
   !$MPVE fl BSF
   w #PLFUF
   DPGPVOEFS
   w $SFBUPS
   PG
   )POP
   w IUUQTHJUIVCDPNZVTVLFCF IUUQTIPOPEFW
3. ࣗݾ঺հΩʔϫʔυ
4. ௒લஔ͖
6. ΞδΣϯμ  લஔ͖
    ·ͣ#JOEJOHTΛཧղ͢Δ
    4FSWJDF
   #JOEJOHT
    +4
   31$
    ྫ
    4NBSU
   1MBDFNFOUͱͷະདྷ
    ϚʔέοτϓϨΠεʁ
7. 
   લஔ͖
8. ͜ͷൃද͸$MPVEGMBSF
   8PSLFSTͷ৽ػೳ
   ʮ+4
   31$ʯʹ͍ͭͯཧղ͢ΔͨΊͷ΋ͷͰ͢
   ʢΘΓͱ֓೦తͳ࿩Ͱ͢ʣ
9. 31$ͱ͸ʁ
10. 31$ͱ͸ w 3FNPUF
    1SPDFEVSF
    $BMM
    w ԕִʢϦϞʔτʣʹ͋Δίϯϐϡʔλͷؔ਺ʢϓϩγʔδϟʣΛ࣮ߦʢίʔ ϧʣ͢Δख๏
    w ྫ
    w H31$
    w +40/31$
    w 9.-31$
11. Α͏͸ʢ8PSLFSʣͷݺͼग़ ͠ํʹ͍ͭͯͷ࿩Λ͠·͢
12. ,FOUPOࢯͷϒϩά w ೥݄
    %FWFMPQFS
    8FFLͰൃද͞Εͨͭͷϒϩάهࣄ
    w ʮ8IZ
    8PSLFST
    FOWJSPONFOU
    WBSJBCMFT
    DPOUBJO
    MJWF
    PCKFDUTʯ
    w ʮ8FWF
    BEEFE
    +BWB4DSJQUOBUJWF
    31$
    UP
    $MPVE fl BSF
    8PSLFSTʯ
    w "*੡඼ͷΞοϓσʔτ΍%ͷ("ʹӅΕͨςΫχΧϧͳهࣄ
    w ͜Ε͔Β঺հ͢Δ+4
    31$Λཧղ͢Δ伴ͱͳΔ
13. IUUQTCMPHDMPVE fl BSFDPNXPSLFSTFOWJSPONFOUMJWFPCKFDUCJOEJOHT l8IZ
    8PSLFST
    FOWJSPONFOU
    WBSJBCMFT
    DPOUBJO
    MJWF
    PCKFDUTz
14. IUUQTCMPHDMPVE fl BSFDPNKBWBTDSJQUOBUJWFSQD l8FWF
    BEEFE
    +BWB4DSJQUOBUJWF
    31$
    UP
    $MPVEGMBSF
    8PSLFSTz
15. ͜Ε͔Β࿩͢͜ͱ͸͜ͷϒ ϩάهࣄʹجͮ͘
16. 
    ·ͣ#JOEJOHTΛཧղ͢Δ
17. #JOEJOHTͱ͸ʁ w $MPVE fl BSFͷϓϩμΫτ΁8PSLFST͔Βͭͳ͙ͨΊͷ֓೦ͱखஈ
    w ྫ
    w "*ɺ"OBMZUJDT
    &OHJOFɺ#SPXTFS
    3FOEFSJOHɺ%ɺ &OWJSPONFOU
    7BSJBCMFTɺ)ZQFSESJWFɺ,7ɺ2VFVFTɺ3ɺ 3BUF
    -JNJUJOHɺ7FDUPSJ[F
18. ֤छϓϩμΫτ
19. ,7Λ࢖͏৔߹ͷ࣮૷
20. FOW.:@,7 ,7ΦϒδΣΫτͦͷ΋ͷʹͳ͍ͬͯΔ ྫ
    HFU
    
    QVU
    
    EFMFUF
    ͕࢖͑Δ
21. ଞʹॻ͘͜ͱ͸XSBOHMFSUPNMͷઃఆ͚ͩ ίʔυ಺ͰͲͷΑ͏ͳ໊લͰݺͼग़͔͢ʁ ࡞ͬͨ,7ͷ*%
22. ΋͠ɺ#JOEJOHTΛ࢖Θͳ ͔ͬͨΒͲ͏ͳΔ͔ʁ
23. 4%,ΛJNQPSU ؀ڥม਺͔ΒΩʔΛऔಘ ֎෦"1*΁઀ଓ औಘͨ͠ΦϒδΣΫτͰૢ࡞
24. ͭͷ໰୊  ηΩϡϦςΟ
    
    Ωʔͷ؅ཧɺΩʔͷॲཧΛॻ͔ͳͯ͘͸͍͚ͳ͍
     ։ൃऀମݧ
    
    4%,Λ࢖Θͳ͍ͱ͍͚ͳ͍ɺADPOOFDUAͷॲཧ͸ඞཁ
25. ͭΛղܾ͍ͯ͠Δͷ͕#JOEJOHTͰ͋Δ 
    ೝূΩʔΛॻ͘ඞཁ͕ͳ͍ 
    4%,ͰΦϒδΣΫτΛ࡞Βͣ௚઀+4ͷϝιουͰݺ΂Δ
26. 
    4FSWJDF
    #JOEJOHTͱ͸ʁ
27. 8PSLFS
    " 8PSLFS
    # ಺෦௨৴ͳͷͰ଎͍ $MPVE fl BSFωοτϫʔΫ 8PSLFS
    "͔Β#Λͭͳ͙
28. ެࣜͷਤ IUUQTEFWFMPQFSTDMPVE fl BSFDPNXPSLFSTSVOUJNFBQJTCJOEJOHTTFSWJDFCJOEJOHT
29. ࣮૷ w ΠϯλʔφϧͳGFUDIΛ͔͚Δ
30. 4FSWJDF
    #JOEJOHTͷϢʔεέʔε w ϑΝΠϧ༰ྔ੍ݶΛආ͚Δ
    w ੹຿ͷ෼ׂ
    w ϚΠΫϩϑϩϯτΤϯυ IUUQTCMPHDMPVE fl BSFDPNCFUUFSNJDSPGSPOUFOET
31. 8FCϖʔδΛύʔπʹ෼͚Δ
32. ͦΕͧΕͷύʔπΛ8PSLFSʹͯ͠4FSWJDF#JOEJOHTͰͭͳ͙
33. Α͍ɻ͕ɺ࣮͸ͦΜͳʹ࢖ ΘΕ͍ͯͳ͍ ࢖͍উख͕ѱ͍ʜʁ
34. 
    +4
    31$
35. ,FOUPOͷϒϩάهࣄͱڞʹެ։ IUUQTEFWFMPQFSTDMPVE fl BSFDPNXPSLFSTSVOUJNFBQJTSQD
36. +4
    31$Λཧղ͢ΔͨΊͷͭͷΞϓϩʔν  #JOEJOHT
    
    8PSLFSΛΧελϜ#JOEJOHTͱͯࣗ͠෼Ͱͭ͘ ΕΔ
     4FSWJDF
    #JOEJOHT
    
    4FSWJDF
    #JOEJOHT͕؆୯ʹॻ͚Δ ͜ͷͭΛຬͨ͢ͷ͕+4
    31$
37. 8PSLFS
    " 8PSLFS
    # #JOEJOHͱͯ͠ݺͼग़ͤΔ 4FSWJDF
    #JOEJOHTͰܨ͍ͰΔ
38. ʮి୎ʯͷ৔߹  #JOEJOHT
    
    ʮి୎ʯͱ͍͏#JOEJOH
    ʢ8PSLFSͰ࣮૷͞Ε ΔʣΛ࡞ΕΔ
     4FSWJDF
    #JOEJOHT
    
    ʮి୎ʯͱ͍͏8PSLFSΛ؆୯ʹݺͼ ग़ͤΔ
39. 8PSLFS
    " ి୎ #JOEJOHͱͯ͠ݺͼग़ͤΔ 4FSWJDF
    #JOEJOHTͰܨ͍ͰΔ DOW
    $"-$BEE 
     SFUVSO
    B C
40. ࣮૷ํ๏
41. ి୎ͷ࣮૷
    
    ݺͼग़͠Մೳͳ8PSLFSΛ࡞Δ 8PSLFS&OUSZQPJOUΛFYUFOETͨ͠ΫϥεΛFYQPSU͢Δ͚ͩ
42. ݺͼग़ͯ͠ΈΑ͏
43. 
    XSBOHMFSUPNMʹఆٛΛ௥Ճ͢Δ ίʔυ಺ͰͲͷΑ͏ͳ໊લͰݺͼग़͔͢ʁ ݺͼग़͢8PSLFSͷ໊લ
44. 
    8PSLFS͔Βݺͼग़͢ ͜͜
45. ͭ·Γʜ  $BMDͱ͍͏αʔϏεΛ$"-$ͱ͍͏#JOEJOHͱͯ͠ར༻͢Δ
     ݺͼग़͢8PSLFSͱ$BMDؒ͸4FSWJDF
    #JOEJOHTͰ઀ଓ͞ΕΔ ͞Βʹɺ+BWB4DSJQUωΠςΟϒͳݺͼग़͕͠Ͱ͖Δ
    
    ʮ+4
    /BUJWF
    31$ʯ
46. 5ZQF4DSJQUͷܕ͕ͪΌΜͱͭ͘
47. +4
    31$Λ࢖͏ ͱخ͍͜͠ͱ
48. +4
    31$ͩͱ#JOEJOHTͷͭΛڗडͰ͖Δ  ηΩϡϦςΟ΁ͷߟྀ
    
    ݺͼग़͠ʹ͸γʔΫϨοτ͕ඞཁͳ͍
     ։ൃऀମݧ
    
    #JOEJOHͱͯ͠ಛʹ+454ωΠςΟϒʹݺ΂Δ
49. 
    ྫ
50. 8FC #MPH #JOEJOHͱͯ͠ݺͼग़ͤΔ 4FSWJDF
    #JOEJOHTͰܨ͍ͰΔ DOW#-0(DSFBUF1PTU ECFYFDVUF A*/4&35
    */50
    1PTUT
    ʜA ϒϩάαʔϏε w %#Λѻ͏αʔϏεͱͦΕΛݺͼग़͢6*
51. ίʔυྫ
52. 
    4NBSU
    1MBDFNFOUͱͷະདྷ
53. ࣮͸͜ͷ+4
    31$
    ͭͷϝϦοτʹՃ͑ͯ΋͏ͻͱͭΞπ͍ͷ͕ʜ
54. 4NBSU
    1MBDFNFOU ͱҰॹʹ࢖͏݅
55. 4NBSU
    1MBDFNFOUͱ͸ʁ w ϢʔβʔଆΑΓόοΫΤϯυʢΦϦδϯʣʹ8PSLFS͕͍ۙ ํ͕ޮ཰తͳ͜ͱ͕͋Δ
    w 8PSLFSͷ৔ॴΛΑ͠ͳʹͯ͘͠ΕΔ
56. ͍ΘΏΔʮΤοδʯͷΑ͞ w Ϣʔβʔͱ8PSLFS͕͍ۙ Ϣʔβʔ 8PSLFS ͍ۙ
57. 8PSLFS͕Ϣʔβʔʹ͍ۙ
    ͚Ͳσʔλϕʔε͔Β͸ԕ͍ w σʔλϕʔεͱͷ΍ΓͱΓ͕ଟ͍৔߹͸ඇޮ཰
58. 8PSLFSΛσʔλϕʔεͷۙ͘ʹஔ͜͏ w Ϣʔβʔ͔Βԕ͍͚Ͳɺσʔλϕʔεͱͷ΍ΓͱΓ͕ଟ͍৔ ߹͸ޮ཰త
59. 
    ΤϯτϦʔϙΠϯτ͝ ͱʹϩέʔγϣϯ͕࠷ద Խ͞ΕΕ͹خ͍͠
60. ϒϩάαʔϏεͷ৔߹
    
    5PLZPฤ w #MPH
    
    %#͕ؒ஗͍ #MPH 8FC Ϣʔβʔ %# 5PLZP 5PLZP 5PLZP -POEPO ଎͍ ଎͍ ஗͍
61. ϒϩάαʔϏεͷ৔߹
    
    -POEPOฤ w Ϣʔβʔ
    
    8FC͕ؒ஗͍ #MPH 8FC Ϣʔβʔ %# 5PLZP -POEPO -POEPO -POEPO ଎͍ ଎͍ ஗͍
62. ϒϩάαʔϏεͷ৔߹
    
    ཧ૝ w %#͕Ϣʔβʔ͔Βԕ͍৔߹ɺ#MPH͚ͩ%#ʹ͍ۙͱྑ͍ #MPH 8FC Ϣʔβʔ %# 5PLZP 5PLZP -POEPO -POEPO ͍͔ۙΒ଎͍ ಺෦͔ͩΒ଎͍ ͍͔ۙΒ଎͍
63. 4FSWJDF
    #JOEJOHTͷྫ w ΋͏͢ͰʹରԠ͸͍ͯ͠Δ
64. ཧ૝తͳॻ͖ํ "1"$ʹ͋Δ%#Λऔಘ͢Δ 4FSWJDF
    #JOEJOHͰ઀ଓ͞Εͨ#-0(Λݺͼग़͢
65. 
    ϚʔέοτϓϨΠεʁ
66. #JOEJOHTϚʔέοτϓϨΠε͕Ͱ͖Δ͔΋ʁ w Ϣʔβʔ͕࡞ͬͨΧελϜ#JOEJOHT͕ྲྀ௨͢Δ
    w ݱࡏ͸࡞ͬͨΞΧ΢ϯτ಺Ͱ͔͠࢖͑ͳ͍
    w ྫ
    w %JTDPSEϘοτ#JOEJOH
    w 4MBDLϘοτ#JOEJOH
    w 4USJQFܾࡁ#JOEJOH
67. ͓͞Β͍
68. +4
    31$Ͱخ͍͜͠ͱ w ηΩϡϦςΟ΁ͷߟྀ
    w ։ൃऀମݧͷ޲্
    w 4NBSU
    1MBDFNFOUͱ૊Έ߹ΘͤΒΕΔ
    w ϚʔέοτϓϨΠεͰເ͕޿͕Δ
69. ༡ΜͰΈͯͩ͘ ͍͞
70. 5IBOLT