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Swarm: The distributed storage platform
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Keisuke Mori
August 17, 2018
Technology
1
800
Swarm: The distributed storage platform
Hi-Ether Meetup Fukuoka #7
https://techplay.jp/event/686209
Keisuke Mori
August 17, 2018
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Transcript
Swarm The distributed storage platform Hi-Ether Meetup Fukuoka #7
͡Ίʹ
ܒี!LNPSSSSZ ۙـେֶ࢈ۀཧֶ෦# $JSDVMBUJPO5FDIOPMPHZ-BC 4NBSU$POUSBDU 4FSWFSTJEF3BJMT (P 1)1
࿑ಇͷղܾΛࢦͯ͠ɺऔΓΜͰ͍͖·͢
ͯ͞ɺࢄετϨʔδͷΛ
ࢄετϨʔδΓ͍ͨͰ͢ΑͶʁ
11Ͱଓ͞Εͨϊʔυ্ͰϑΝΠϧΛڞ༗ 11ωοτϫʔΫʹΞοϓϩʔυ͞ΕͨϑΝΠϧΛஅยԽ͠ɺ֤ϊʔυʹ ࢄͯ͠ஔ͢Δ͜ͱͰোੑΛߴΊΔˠ୯Ұোͷ͕ͳ͍ ωοτϫʔΫ্ͷϊʔυ͕Մಈ͠ଓ͚ΔݶΓɺϑΝΠϧγεςϜΛఏڙ͠ ଓ͚Δ͜ͱ͕Ͱ͖Δ -FHBDZɿ8JOOZ #JU5PSSFOU .PEFSOɿ*1'4
4XBSN 4UPSK 4JB 'JMFDPJOʜ ࢄϑΝΠϧγεςϜ
*OUFS1MBOFUBSZ'JMF4ZTUFN 11ωοτϫʔΫ্Ͱಈ࡞͢ΔϋΠύʔϝσΟΞϓϩτίϧ ίϯςϯπࢦ ɹʔ888ͷΑ͏ͳϩέʔγϣϯࢦͰͳ͍ ɹɹ&YFYBNQMFDPNIPHFGVHBIUNM ɹʔॴͰͳ͘ɺίϯςϯπͷ༰Λࢦఆͯ͠ΞΫηε͢Δ ɹɹίϯςϯπͷϋογϡΛίϯςϯπ*%ͱͯ͠ར༻ ɹɹίϯςϯπͷϋογϡΛࢦఆ͠ɺͦͷίϯςϯπ͕͋Δʮॴʯࢦఆ͠ͳ͍
ɹɹෛՙࢄɺোੑɺݕӾੑɺվળੑ *1'4
4XBSN
&UIFSFVNͷϓϩτίϧΛͬͨࢄετϨʔδϓϥοτϑΥʔϜ 1SPPGPG$PODFQUWFS͕։ൃத 4XBSN
ɾ&UIFSFVNXFCTUBDLͷͭ ɾίϯςϯπࢦ ɾಛఆͷαʔόʔͰϗετ͞Εͳ͍ ɾେ͖ͳσʔλ$IVOLͱׂͯͯ͠͠อଘ ɾθϩఀࢭ࣌ؒɺෛՙࢄɺোੑɺݕӾੑɺվળੑ ɾ&/4ʹΑΔυϝΠϯղܾ ɾӬٱʹόʔδϣϯཧ͞Εͨίϯςϯπ 4XBSN֓ཁ
͘ଊ͑Δͱ΄΅ಉ͡ͷͱଊ͑ͯྑ͍͕ɺͱ͜ΖͲ͜Ζҧ͏ ͲͪΒ։ൃ్தʢ1P$ʣ *1'4ͱ4XBSN *1'4 4XBSN 11ϥΠϒϥϦ MJCQQ EFWQQ
໊લղܾ *1/4 &/4 ϒϥδϯά HBUFXBZJQGTJPYYY MPDBMIPTUC[[YYY ΠϯηϯςΟϒ ʔ 1P$ͰՃ༧ఆ *1'4ͱ4XBSNͷओͳ૬ҧ
4XBSNͷετϨʔδ୯ҐͰ͋ΔɺαΠζ͕ݶఆ͞Εͨσʔλɻ ωοτϫʔΫDIVOLΛೝࣝ͠ɺϑΝΠϧίϨΫγϣϯͷ֓೦ Λ࣋ͨͳ͍ɻDIVOL,#ɻ ߏ DIVOL SFGFSFODF ίϯςϯπʹ༩͞ΕΔҰҙͷࣝผࢠɻ ඇ҉߸ԽɿIFYCZUFͰγϦΞϥΠζ͞ΕͨCZUFͷϋογϡ
҉߸ԽɹɿίϯςϯπΞυϨε CZUF ʴ෮߸Խݤ CZUF NBOJGFTU ϑΝΠϧίϨΫγϣϯΛهड़͢Δσʔλߏɻ σΟϨΫτϦ͝ͱΞοϓϩʔυ͢Δ࣌ʢ&Y8FCϖʔδʣʹɺ ϑΝΠϧͷϚοϐϯάΛఆ͍ٛͯ͠Δ
ಉҰσΟϨΫτϦͷ'JMFUYU 'JMFUYU 'JMFUYUΛΞοϓϩʔυ ϑΝΠϧΞΫηεʢC[[ʣ MPDBMIPTUC[[IBTIYYYYYYYYYY'JMFUYU MPDBMIPTUC[[FYBNQMFFUI'JMFUYU σΟϨΫτϦͷϑΝΠϧҰཡʢC[[MJTUʣ MPDBMIPTUC[[MJTUIBTIYYYYYYYɹ
.BOJGFTUϑΝΠϧΛऔಘʢC[[SBXʣ MPDBMIPTUC[[SBXIBTIYYYYYYYɹ ϑΝΠϧΞΫηε
4XBSN"DDPVOUJOH1SPUPDPM શൠతͳΠϯηϯςΟϒཧ 4XBSNͷΠϯηϯςΟϒγεςϜͷίΞͱͳΔ ΠϯηϯςΟϒγεςϜʢ1P$ʣ 48"1 48&"3 4FDVSF8BZTPG&OTVSJOH"3DIJWBM $IVOL͕ͪΌΜͱอ࣋͞Ε͍ͯΔ͔Ͳ͏͔ɺ$IVOLͷ࣭Λ୲อ
48&"3ʹอূۚΛΤεΫϩʔͯ͠ΠϯηϯςΟϒΛड͚Δ 48*/%-& 4FDVSFE8JUI*/TVSBODF%FQPTJU-JUJHBUJPOBOE&TDSPX 48&"3Ͱక݁͞ΕͨίϯτϥΫτΛࢹ͠ɺΤεΫϩʔͨ͠อূۚ Λཧ͠ɺҧऀʹേଇΛ༩͑Δ
ࢀর࣮7FSTJPOY ͱΓ͋͑ͣ͞ΘͬͯΈΔ go get github.com/ethereum/go-ethereumgo cd $GOPATH/src/github.com/ethereum/go-ethereum/cmd install
./geth install ./swarm HPFUIFSFVNʹ࣮ࡁ geth account new geth --syncmode=light swarm --bzzaccount <your-account-here> ΒͤͯΈΔ
ͱΓ͋͑ͣ͞ΘͬͯΈΔ $ cd /Users/keisuke/go/swarm $ ls > File_1.txt
File_2.txt File_3.txt $ swarm --recursive up /Users/keisuke/go/swarm > c930e0ada49614c5465334923b9b8ab9a0d8ebe0d35bfaf0044dbc3ac9178f06 σΟϨΫτϦ͝ͱΞοϓϩʔυ $ swarm ls c930e0ada49614c5465334923b9b8ab9a0d8ebe0d35bfaf0044dbc3ac9178f06 > HASH CONTENT TYPE PATH 4c24fcac7c18851a5dd6a6a12fbdb7e9f7b634751d3a992c4bb15e27fe16ba45 text/plain; charset=utf-8 File_1.txt 4c24fcac7c18851a5dd6a6a12fbdb7e9f7b634751d3a992c4bb15e27fe16ba45 text/plain; charset=utf-8 File_2.txt d9403cc2dd48592d93dde0e5e296328c303206130f28f9822a0c89f35ddfe5e6 text/plain; charset=utf-8 File_3.txt Ξοϓϩʔυ͞Εͨ͜ͱΛ֬ೝ
:":
144 11ϝοηʔδϯάγεςϜ .VUBCJMJUZ &/4Λ௨ͯ͡ίϯςϯπΛมߋՄೳʹ '64&TVQQPSU 4XBSNσʔλΛϩʔΧϧϑΝΠϧγεςϜʹ౷߹ʢ-JOVY .BDʣ 1P$
IUUQTHJUIVCDPNPSHTFUIFSTQIFSFQSPKFDUT ϩʔυϚοϓ
ͳʹ͔࡞ͬͯΈ͍ͨͰ͢ΑͶ
͓ΘΓʹ
ֶੜϒϩοΫνΣʔϯΤϯδχΞ ૿ͨ͘͠ͳ͍ʁ
-*/&άϧʔϓlz͡Ί·ͨ͠ɻ
ίϛϡχςΟͭ͘Γͨ͘ͳ͍ʁ
ͭ͘Γ·͠ΐ͏ʂ
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠