Libraの現状と技術面をざっくりと / astudy20191114

アスクル社内勉強会で発表した資料です！

Transcript

1. த໺
   ڿਓ
   
   ΞεΫϧגࣜձࣾ
   
   "4UVEZ
   ΞεΫϧࣾ಺ษڧձ -JCSBͷݱঢ়ͱٕज़໘Λͬ͘͟Γͱ ʙιϑτ΢ΣΞʹҿΈࠐ·Ε͍ͯ͘ੈքʹੜ͖Δࢲͨͪʙ
2. 8FCΞϓϦέʔγϣϯΤϯδχΞ த໺
   ڿਓ IUUQTBDLJOUPTIHJUIVCJPBCPVU BDLJOUPTI /","/0@"LJIJUP
3. 044׆ಈ w0QFO"1*
   (FOFSBUPS
   wIUUQTHJUIVCDPN0QFO"1*5PPMTPQFOBQJHFOFSBUPS
   w(BOFTIB
   Ψωʔγϟ
   wIUUQTHJUIVCDPNBDLJOUPTIHBOFTIB
   w4OJEFM
   εφΠσϧ
   wIUUQTHJUIVCDPNBDLJOUPTITOJEFM
4. ໨࣍ w ൃදͷΰʔϧ
   w ֓ཁͱݱঢ়
   w ໨త
   w खஈ
   w ݱঢ়
   w ٕज़໘
   w ߹ҙΞϧΰϦζϜ
   w σʔλߏ଄
   w ͓ΘΓʹ ɾॳ०࣌఺ͷ৘ใ
   ɾઈࢍΩϟονΞοϓதͳͷͰ
   ɹཧղ͕ؒҧͬͯΔͱ͜Ζ͕͋ͬͨΒ͝ΊΜͳ͍͞ʂ
5. ൃදͷΰʔϧ w ͍··ͰΩϟονΞοϓͯ͠ͳ͔ͬͨͻͱʹ
   w -JCSBͬͯͦ͏͍͏ײ͡ͳͷͶʂͱࢥͬͯ΋Β͏͜ͱ ɾ-JCSBʹ͍ͭͯ͸൱ఆ΋ߠఆ΋͠·ͤΜ
   
   ɾϒϩοΫνΣʔϯ·ΘΓͷٕज़ʹڵຯ͕͋Δਓ͕ؒ-JCSBʹ͍ͭͯ ·ͱΊͯΈ·ͨ͠ɺͱ͍͏ൃදͰ͢
   
6. ໨࣍ w ൃදͷΰʔϧ
   w ֓ཁͱݱঢ়
   w ໨త
   w खஈ
   w ݱঢ়
   w ٕज़໘
   w ߹ҙΞϧΰϦζϜ
   w σʔλߏ଄
   w ͓ΘΓʹ
7. -JCSB w 'BDFCPPL͕։ൃΛओಋ͍ͯ͠ΔԾ૝௨՟ ҉߸ࢿ࢈ ϓϩδΣΫτ
   w ൃද
   w IUUQTMJCSBPSH
   w ϗϫΠτϖʔύʔ
   IUUQTMJCSBPSHXIJUFQBQFS
   w ςΫχΧϧϖʔύʔ
   IUUQTEFWFMPQFSTMJCSBPSHEPDTUIFMJCSBCMPDLDIBJOQBQFS
8. ໨త
9. ໨త w ਺ेԯͷਓͼͱʹྗΛ༩͑ΔɺγϯϓϧͰάϩʔόϧͳ௨՟ͱۚ༥Πϯϑϥ IUUQTMJCSBPSH
10. ໨త w 4.4ฒΈͷखܰ͞ͱ҆͞Ͱ͓ۚΛૹΕΔΑ͏ʹͳΔ΂͖ IUUQTDBMJCSBDPN
11. ໨త
    
    ՝୊ײ w ԯਓ͕ۜߦޱ࠲Λ΋͍ͬͯͳ͍
    w ஍ٿਓޱશମͷ
    w ւ֎ૹۚͷ஗͞
    w ʙӦۀ೔͘Β͍
    w ݱۚऔҾίετͷߴ͞
    w ࠃࡍؒͷ৔߹ɺฏۉ IUUQTMJCSBPSH ͜Εʹ͍ͭͯ͸΋͏গ͠ৄ͘͠ௐ΂ͨͷͰ
    ࣍ͷεϥΠυͰ঺հ͠·͢
12. ໨త
    
    ՝୊ײ
    ˠ
    6OCBOLFEʹ͍ͭͯ w ԯਓ
    
    தࠃɺΠϯυɺύΩελϯʹಛʹଟ͍
    ˞
    w ޱ࠲ͷҡ࣋ख਺ྉ͕ߴ͍ ૹۚख਺ྉ͕ߴ͍ͱ͍ͬͨཧ༝΋ ˞
    w ͦͷ͏ͪԯਓ͸ܞଳి࿩Λ͍࣋ͬͯΔ
    w ͨͩ͠ܞଳͱΠϯλʔωοτΞΫηεͷ
 ྆ํΛ͍࣋ͬͯΔਓ͸ͦͷ͏ͪ
    w ˞ΠϯλʔωοτΞΫηε
    
    εϚʔτϑΥϯɺ1$ɺωοτΧϑΣͳͲ
    w (MPCBM
    'JOEFYͷϨϙʔτͰ͸σδλϧϖΠϝϯτ͕
 ༗ޮͰ͋Δ͜ͱʹ͍ͭͯݴٴ͞Ε͍ͯΔ 5IF
    (MPCBM
    'JOEFY
    %BUBCBTF
    
    IUUQTHMPCBMpOEFYXPSMECBOLPSH ˞ ˞
13. ໨త
    
    ظ଴஋ w ൃల్্ࠃʹஹυϧΛ΋ͨΒ͢
    w  ສਓͷ৽͍͠ޏ༻Λ૑ग़
    w ਓʑͷऩೖ͕޲্
    w ۃ౓ͷශࠔΛ࡟ݮ IUUQTMJCSBPSH
14. ໨త
    
    ࢲͨͪͷ฻Β͠΁ͷӨڹ w ೔ຊͰ฻Β͍ͯ͠Δࢲͨͪʹͱͬͯ͸՝୊ײʹগ͠ڑ཭Λײ͡Δʁ
    w Έͳ͞Μ͸Ͳ͏ࢥ͍·͔͢ʁ
15. खஈ
16. खஈ
    
    ϢʔβʔΠϯλʔϑΣʔε w ΢ΥϨοτΞϓϦ
    $BMJCSB
    w 'BDFCPPLࢠձࣾͰ͋ΓɺϦϒϥڠձͷҰһͰ΋͋Δ$BMJCSB͕ࣾ։ൃ
    w .FTTFOHFS΍8IBUT"QQͱͷ࿈ܞͷՄೳੑ
17. खஈ
    
    ٕज़ w εςʔϒϧίΠϯ
    w όεέοτ௨՟
    w ௨՟಺༁ͱߏ੒ൺ཰
    
    w ถυϧɺϢʔϩɺ೔ຊԁɺӳϙϯυɺγϯΨϙʔϧυϧ
    w σϏουɾϚʔΧε$&0͸υϧ΍Ϣʔϩ౳ͱରͰϖοά͢ΔՄೳੑ΋ݴٴ
    w ಠࣗϒϩοΫνΣʔϯ
    w ߹ҙΞϧΰϦζϜ
    -JCSB#'5ɺεϚʔτίϯτϥΫτݴޠ
    .PWF
18. खஈ
    
    ӡӦମ੍ w -JCSBڠձ
    w εΠεʹڌ఺
    w $BMJCSBؚࣾΉ༷ʑͳۀքͷࢀՃاۀͰߏ੒
    w /10ͳͲͷඇӦར૊৫΋
    w ൃද౰ॳࣾ
    ˠ
    ࣾ
    
    ઃཱ૯ձ࣌఺ IUUQTMJCSBPSHFO64BTTPDJBUJPOGPVOEJOH@NFNCFST IUUQTMJCSBPSHFO64BTTPDJBUJPODPVODJMQSJODJQMFTPWFSWJFX
19. खஈ
    
    ։ൃମ੍ w Φʔϓϯιʔε
    w ͢Ͱʹެ։͞Ε͍ͯΔ IUUQTHJUIVCDPNMJCSBMJCSB ίϯτϦϏϡʔτ͠·ͨ͠
    
20. ঢ়گ
21. ঢ়گ w ౰ॳͷϦϦʔε༧ఆ͸Ԇظ
    w ೥લ൒
    ˠ
    ະఆʁ
    w βοΧʔόʔάࢯ͕ެௌձͰʮۚ༥౰ہͷݒ೦ʹશ໘తʹରॲͰ͖Δ·Ͱ։࢝ Λ஗ΒͤΔʯͱ໌ݴ
    w ౰ॳൃද͞Ε͍ͯͨࢀՃاۀ͕͍͔ͭ͘୤ୀ
    w ൃද౰ॳࣾ
    
    ˠ
    ࣾ
    
    ઃཱ૯ձ࣌఺
    w 1BZ1BMɺFCBZɺ7*4"ɺ.BTUFS
    $BSEɺTUSJQFɺNFSDBEP
    QBHPɺ#PPLJOHDPN
    
22. ঢ়گ w ใಓ
    w 
    ถԼӃۚ༥αʔϏεҕһ௕
    
    -JCSBͷ։ൃܭըͷఀࢭΛٻΊΔ
    w 
    (࡞ۀ෦ձٞ௕
    
    -JCSBɺن੍্ͷݒ೦ղফ͢Δ·Ͱ࣮ݱ͠ͳ͍
    w 
    ถ੓෎͕-JCSBڠձࢀՃاۀ΁จষΛૹ෇
    w 
    (
    ࡒ຿লɾதۜ૯ࡋձٞ
    ʮਂࠁͳϦεΫʹద੾ʹରॲʯ͢Δ·ͰൃߦΛೝΊͳ͍ํ਑
    w 
    ಠ෹ҏ͕-JCSBΛϒϩοΫ͢Δํ਑Λද໌
    w ࠃࡍػؔ౳͔Βग़͞Εͨจॻ
    w (
    8PSLJOH
    (SPVQ
    PO
    4UBCMF
    $PJOT
    
    *OWFTUJHBUJOH
    UIF
    JNQBDU
    PG
    HMPCBM
    TUBCMFDPJOT
    w (ࡒ຿େਉɾதԝۜߦ૯ࡋձٞ
    
    άϩʔόϧɾεςʔϒϧίΠϯʹؔ͢Δ(ϓϨεϦϦʔε
    w '"5'
    
    .POFZ
    MBVOEFSJOH
    SJTLT
    GSPN
    lTUBCMFDPJOTz
    BOE
    PUIFS
    FNFSHJOH
    BTTFUT
23. ঢ়گ w ެௌձ
    w 
    
    Ϧϒϥͷ੹೚ऀ
    σϏουɾϚʔΧεࢯ͕ূݴ
    w ʮΘΕΘΕ͕ߦಈ͠ͳ͚Ε͹ɺՁ஋؍͕ϑΣΠεϒοΫͷͦΕͱ͸·ͬͨ͘ҟͳΔਓʑ͕؅ཧ͢Δσδλ ϧ௨՟͕ɺ͙͢͞·ग़ͯ͘Δ͜ͱͰ͠ΐ͏ʯ
    w 
    'BDFCPPL
    $&0
    ϚʔΫɾβοΧʔόʔάࢯ͕ূݴ
    w ʮ΋͠ڐೝՄͳ͠Ͱ-JCSBڠձ͕ܭըΛਐΊΑ͏ͱ͢Ε͹ɺ'BDFCPPL͸ڠձΛ཭୤͢Δʯ
    w ʮ-JCSB͸ૹۚΛ༰қʹ͢Δ͜ͱ͕໨తͰ͋Γɺ๏ఆ௨՟ͱͷڝ߹΍ۚ༥੓ࡦʹӨڹΛٴ΅͢͜ͱ͸ҙਤ ͍ͯ͠ͳ͍ʯ
    w ʮถࠃ͕͜ͷ෼໺ΛϦʔυ͠ͳ͚Ε͹ɺଞࠃ͕͢ΔͩΖ͏ɻଞࠃͷ੓෎΍اۀ͸ɺถࠃͱಉ͡ن੍੍౓΍ ಁ໌ੑʹର͢ΔίϛοτϝϯτΛ࣋ͨͣʹ࣮ߦ͢Δ͔΋͠Εͳ͍ʯ 
    
    &YBNJOJOH
    'BDFCPPL`T
    1SPQPTFE
    $SZQUPDVSSFODZ
    BOE
    *UT
    *NQBDU
    PO
    &WFOU*%
    IUUQTXXXZPVUVCFDPNXBUDI W;5L$/8X 
    
    "O
    &YBNJOBUJPO
    PG
    'BDFCPPL
    BOE
    *UT
    *NQBDU
    PO
    UIF
    'JOBODJBM
    4FSWJDF
    &WFOU*%
    IUUQTXXXZPVUVCFDPNXBUDI WJT5##QM4"
24. ঢ়گ
    
    ݒ೦ͷϙΠϯτ w ๏తͳ໌֬͞
    w Ψόφϯεʢཪ෇͚ࢿ࢈΁ͷ౤ࢿɺՁ஋҆ఆԽϝΧχζϜʹ͍ͭͯʣ
    w Ϛωϩϯɺςϩࢿۚڙ༩౳ෆਖ਼ͳࢿۚऔҾʹ࢖ΘΕΔϦεΫ
    w ϓϥΠόγʔอޢ
    w ফඅऀอޢɾ౤ࢿՈอޢ
    w ੫຿্ͷίϯϓϥΠΞϯε
    w ۚ༥੓ࡦ΁ͷѱӨڹ
    w ࠃࡍతͳ௨՟ମ੍΁ͷѱӨڹ εςʔϒϧίΠϯʹؔ͢Δ(ٞ௕੠໌
    IUUQXXXCPKPSKQBOOPVODFNFOUTSFMFBTF@SFMEIUN
25. ঢ়گ w ΩϟαϦϯɾϙʔλʔࢯ͕
    CUPLZP
    Ͱొஃ
    w ʮڠௐʯΛ܁Γฦ͠ൃݴ͞Ε͍ͯͨ
    w ˠ
    ʮ֤ࠃͷن੍౰ہͱे෼ʹڠௐ͠ͳ͕ΒαʔϏε։࢝Λ໨ࢦ͍ͨ͠ʯ IUUQTOBWFOVFKQCUPLZP
26. ঢ়گ
    
    ͜͜·Ͱͷͬ͘͟Γ·ͱΊ w ن੍౰ہͳͲ
    w άϩʔόϧεςʔϒϧίΠϯʹطଘͷ໰୊ΛղܾͰ͖ΔՄೳੑ͕͋Δ͜ͱ͸͔֬ͩ ͕ɺॾʑͷϧʔϧ͕੔උͰ͖͍ͯͳ͍
    w ๏཯ɺن੍্ͷ՝୊͕ΫϦΞʹͳΒͳ͍͏ͪ͸ϓϩδΣΫτͷ։࢝͸ೝΊͳ͍
    w 'BDFCPPLɺ$BMJCSB
    w ϦεΫΛ๊͑ͨ··ϩʔϯν͢Δؾ͸ແ͍
    w -JCSBͷ։ൃΛߦ͍ͳ͕Βڠௐͯ͠ਐΊ͍͖͍ͯͨ աڈͷ'BDFCPPLͷݸਓ৘ใ΍ϑΣΠΫ χϡʔεͳͲͷ໰୊Λڍ͛ͯڧ͘൷൑͢Δ ਓͨͪ΋ɻ ͔ͦ͜Βઌͷٞ࿦͸ʁ
27. ໨࣍ w ൃදͷΰʔϧ
    w ֓ཁͱݱঢ়
    w ໨త
    w खஈ
    w ݱঢ়
    w ٕज़໘
    w ߹ҙΞϧΰϦζϜ
    w σʔλߏ଄
    w ͓ΘΓʹ
28. ٕज़໘
    
    ࿩͢͜ͱ
    
    ࿩͞ͳ͍͜ͱ w ࿩͢͜ͱ
    
    ߹ҙΞϧΰϦζϜɺσʔλߏ଄ ΞΧ΢ϯτ͚ͩ
    w ࿩͞ͳ͍͜ͱ
    
    .PWFݴޠ IUUQTEFWFMPQFSTMJCSBPSHEPDTBTTFUTQBQFSTUIFMJCSBCMPDLDIBJOQEG
29. ߹ҙΞϧΰϦζϜ
30. ߹ҙΞϧΰϦζϜ
    
    ԿΛ߹ҙ͍ͯ͠Δͷ͔ w τϥϯβΫγϣϯͷॱ൪
    w τϥϯβΫγϣϯͷ݁Ռ
    w ˠ
    4UBUF
    .BDIJOF
    3FQMJDBUJPO 4.3 IUUQTEFWFMPQFSTMJCSBPSHEPDTMJCSBQSPUPDPM
    -JCSB
    1SPUPDPM
    ,FZ
    $PODFQUT
    
    5SBOTBDUJPOT
    BOE
    4UBUFT
31. ߹ҙΞϧΰϦζϜ
    
    -JCSB#'5ͷݩʹͳ͍ͬͯΔΞϧΰϦζϜ IUUQTNFEJVNDPNDPJONPOLTQCGUVOEFSTUBOEJOHUIFBMHPSJUINCBBF IUUQTNFEJVNDPNPOUPMPHZOFUXPSLIPUTUV⒎UIFDPOTFOTVTQSPUPDPMCFIJOEGBDFCPPLTMJCSBCGUBC 1#'5 )PU4UV⒎
32. ߹ҙΞϧΰϦζϜ
    
    -JCSB#'5ͷมߋ఺ w 4.3ͷܾఆੑ͕όάͬͯ΋େৎ෉ͳΑ͏ʹɺόϦσʔλ͸5Yͷॱ൪͚ͩͰͳ݁͘Ռʹ ΋ॺ໊͢Δ
    ʢ'BJM
    TBGFͷͨΊʁʣ HotStuff Extensions and Modifications IUUQTHJUIVCDPNMJCSBMJCSBUSFFNBTUFSDPOTFOTVTIPUTUV⒎FYUFOTJPOTBOENPEJpDBUJPOT ʢଞʹ΋มߋ఺͕͍͔ͭ͘ॻ͍ͯ͋Δ͚ͲɺΑ͘Θ͔Γ·ͤΜͰͨ͠…ʣ ͔ͨ͠ʹHotStuffͰ͸ɺ ʹॺ໊͍ͯ͠Δ ⟨type, viewNumber, node⟩ LibraBFT > 4.2. Verification of Network Records IUUQTEFWFMPQFSTMJCSBPSHEPDTBTTFUTQBQFSTMJCSBDPOTFOTVTTUBUFNBDIJOFSFQMJDBUJPOJOUIFMJCSBCMPDLDIBJOQEG HotStuff > 4.2 Data Structure IUUQTBSYJWPSHQEGQEG (௥ه) ਵ࣌վળ͕ߦΘΕ͍ͯΔ໛༷ ˠ
    IUUQTEFWFMPQFSTMJCSBPSHCMPH
33. ߹ҙΞϧΰϦζϜ
    
    5SBOTBDUJPOT
    1FS
    4FDPOE 514 w ϖʔύʔͷઆ໌Ͱ͸
     
    514
    w ࢀߟ
    "MJQBZ͕8  ʹ 514
    w શવ଍Γͳ͍ʁ IUUQTEFWFMPQFSTMJCSBPSHEPDTBTTFUTQBQFSTUIFMJCSBCMPDLDIBJOQEG
    
    1FSGPSNBODF
    8F
    BOUJDJQBUF
    UIBU
    NBOZ
    QBZNFOU
    USBOTBDUJPOT
    XJMM
    PDDVS
    P⒎DIBJO
    GPS
    FYBNQMF
    XJUIJO
    B
    DVTUPEJBM
    XBMMFU
    PS
    CZ
    VTJOH
    QBZNFOU
    DIBOOFMT
    <> w αΠυνΣʔϯతͳ΋ͷΛ૝ఆ͍ͯ͠Δͱॻ͔Ε͍ͯΔ ࢀߟ
    ΠʔαϦΞϜεέʔϦϯάͷഎܠͱ֓ཁ
    IUUQTTQFBLFSEFDLDPNPTVLFJTBSJBNVTVLFSJOHVGBMTFCFJKJOHUPHBJZBP TMJEF ΦϑνΣʔϯͷٕज़Λ࢖͏͜ͱͰϝΠϯνΣʔϯͷঢ়ଶભҠΛ࠷খݶʹ͢Δ
    ˣ
    ϘτϧωοΫ͕߹ҙΞϧΰϦζϜ͔ΒΦϑνΣʔϯଆͷॲཧೳྗʹҠΔ
    ˣ
    ཧ࿦తʹ͸ݱࡏͱಉ౳ͷύϑΥʔϚϯε͕ग़Δ͸ͣ
    
34. σʔλߏ଄
35. σʔλߏ଄
    
    4UPSBHFϞδϡʔϧ w -FEHFS
    *OGP
    5SBOTBDUJPOT
    
    w &WFOUT
    "DDPVOU
    4UBUFT IUUQTEFWFMPQFSTMJCSBPSHEPDTDSBUFTTUPSBHF IUUQTEFWFMPQFSTMJCSBPSHEPDTMJCSBQSPUPDPM
36. σʔλߏ଄
    
    +FMMZpTI
    .FSLMF
    5SFF w CJUͷ4QBSTF
    .FSLMF
    5SFF
    w *OUFSOBM
    /PEFͱ-FBG
    /PEFͰߏ੒ IUUQTHJUIVCDPNMJCSBMJCSBCMPCNBTUFSTUPSBHFKFMMZpTINFSLMFTSDMJCST
37. σʔλߏ଄
    
    +FMMZpTI
    .FSLMF
    5SFF w ࢀߟ
    
    4QBSTF
    .FSLMF
    5SFF IUUQTNFEJVNDPN!LFMWJOpDIUFSXIBUTBTQBSTFNFSLMFUSFFBDEBBFC lؚ·Ε͍ͯΔz
    ূ໌ lؚ·Ε͍ͯͳ͍z
    ূ໌
38. σʔλߏ଄
    
    +FMMZpTI
    .FSLMF
    5SFF w *OUFSOBM
    /PEFͱ4QBSTF
    .FSLMF
    5SFF CJUͷ4QBSTF
    .FSLMF
    5SFF
    ˣ
    CJUͷ4QBSTF
    .FSLMF
    5SFF͕࠷େਂ͞·Ͱॏͳͬͯ
    CJUΞυϨεͷεςʔτΛදݱ͍ͯ͠Δ
39. σʔλߏ଄
    
    +FMMZpTI
    .FSLMF
    5SFF w ϒϩάʹॻ͖·ͨ͠
    
    w ιʔείʔυΛ௥ͬͨΓɺ
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    w σʔλߏ଄
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41. ͓ΘΓʹ w -JCSBͷݱঢ়ͱٕज़໘ʹ͍ͭͯͬ͘͟ΓΈ͖ͯ·ͨ͠
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42. ͓ΘΓʹ w ιϑτ΢ΣΞ͕ੈքΛҿΈࠐΜͰ͍͘
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43. ͢΂ͯΦʔϓϯιʔε
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