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ニコニコ動画・生放送でのErlangの利用 in tokyo.ex#7 × 歌舞伎座.tec...
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mtgto
January 11, 2017
Programming
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ニコニコ動画・生放送でのErlangの利用 in tokyo.ex#7 × 歌舞伎座.tech#13
tokyo.ex#7 × 歌舞伎座.tech#13で発表した資料です。
https://kbkz.connpass.com/event/46153/
mtgto
January 11, 2017
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Transcript
χίχίಈըɾੜ์ૹͰͷ &SMBOHͷར༻ UPLZPFYʷՎب࠲UFDI 5 גࣜձࣾυϫϯΰޙ౻ࢤ !NUHUP
ࣗݾհ ޙ౻ࢤ ͝ͱ͏͞ͱ͠ υϫϯΰʹ৽ଔೖࣾ UXJUUFS HJUIVC!NUHUP χίχίJ1IPOF χίχί"OESPJE χί
χίੜ์ૹͳͲͷαʔϏε։ൃΛܦݧ ݄͔Β৴γεςϜ։ൃʹҟಈ
͡Ίʹ χίχίʹ पΛܴ͑·ͨ͠
IUUQCMPHOJDPWJEFPKQ QIQ
ࢲ େֶ࣌ʹ࣌ؒΛ࿘අͤ͞ ΒΕͨχίχί͕͖Ͱυ ϫϯΰʹೖࣾ͠·ͨ͠
ࠓ͍ͨ͜͠ͱ χίχίಈըͱχίχίੜ์ૹͰ &SMBOHΛͲͷΑ͏ʹ͍ͬͯΔͷ͔ େنαʔϏεͰ&SMBOH7.Λӡ༻ ͢Δ͏͑ͰֶΜͩ͜ͱͷհ
ࠓ&MJYJSͷձͰ͢ΑͶʁ &SMBOHͷͳ͕͠ଟ͍Ͱ͕͢ɺݴޠͷ͠·ͤΜɻ จ๏͕Ͳ͏ͱ͔ɻ ಉ͡&SMBOH7.ΛͬͨݴޠΛۀͰ։ൃɺӡ༻͠ ͯΈͯಘΒΕͨݟΛڞ༗͠·͢
աڈͷՎب࠲5FDIͷએ Վب࠲5FDI Ͱχίχίੜ์ૹ ඇ1$σ όΠε৴ Λ&SMBOHͰ͍ͬͯΔΛ͠·ͨ͠ ʢ݄ ݄ ͦͪΒΛ͝ཡͷํؒͰͲΕ͚ͩن͕֦େͨ͠
ָ͔͓͠Έ͍͚ͨͩΔͱ͓͍·͢ ͓·͚ IUUQTLCL[DPOOQBTTDPNFWFOU IUUQTLCL[DPOOQBTTDPNFWFOU
χίχίಈըͱχίχί ੜ์ૹͰ&SMBOHΛͲͷ Α͏ʹ͍ͬͯΔͷ͔
ࠓઆ໌͢ΔγεςϜ χίಈͷશϢʔβʔಈըͷߘͱࢹௌ ˞աڈʹߘ͞Εͨಈըͯ͢Ͱͳ͍ χίੜͷҰ෦ͷϢʔβʔੜ์ૹͷ৴ɺࢹௌ IUUQCMPHOJDPWJEFPKQOJDPOFXTIUNM IUUQCMPHOJDPWJEFPKQOJDPOFXTOJIUNM
γεςϜߏʢ͓͓ͬ͟ͺʣ
γεςϜߏ ᶃಈըΛߘ ɹੜ์ૹΛ৴ ᶄτϥϯείʔυ ᶅಈըΛ৴ ੜ์ૹΛ৴
γεςϜߏ &SMBOH &SMBOH &SMBOH $$ ˞શ෦͡Όͳ͍Ͱ͢
γεςϜߏ Ϋϥελʔؒͷ௨৴&SMBOH31$ ಠࣗϓ ϩτίϧ 5$1 Ͱ࣮ࢪ TQBXO SFDFJWF͏͜ͱগ ͳ͍051ͷHFO@TFSWFSͷΈΛଟ༻
ιϑτΣΞ։ൃ &SMBOHͰສ-0$ɺສίϛοτɺઍϓϧϦΫఔ ϏϧυπʔϧSFCBS SFCBS NJY ։ൃ։࢝࣌SFCBS&MJYJSͳ͔ͬͨ NJYͷґଘղܾ NJYMPDL ͕΄ͯ͘͠SFCBSͱซ༻ ςετܥYSFG
EJBMZ[FS FVOJU DU ݁߹ࢼݧ
ςετ &6OJU Ϣχοτςετ $PNNPO5FTU $-*͔Βͷ݁߹ςετ YSFG ϦϑΝϨϯενΣοΫɺଘࡏ͠ͳ͍ؔΛݺͼग़ ͯ͠ͳ͍͔ͳͲΛݕࠪ EJBMZ[FS
੩తܕݕࠪث͍
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ܧଓతΠϯςάϨʔγϣϯ 1VMM3FRVFTU࡞ˍߋ৽࣌ɺσϑΥϧτϒ ϥϯνͷϚʔδ࣌ʹϏϧυɺςετΛࣗಈ ࣮ߦ աڈʹνʔϜϝϯόʔͷ૿ՃɺϓϩδΣΫτ ͷ֦େͱͱʹ͔͔Δ͕࣌ؒʹͳͬͨ ͍·$*ϚγϯΛͰฒྻ࣮ߦՄೳʹ͠ ͍ͯΔ
σϓϩΠ SFMY GQNͰ31.࡞ SFMYϦϦʔεόΠφϦ࡞ TZTUFNEͰࣗಈىಈͰ͖ΔΑ͏ʹ͍ͯ͠Δ "OTJCMFͰฒྻσϓϩΠ
େنαʔϏεͰ &SMBOH7.Λӡ༻͢Δ ͏͑ͰֶΜͩ͜ͱͷհ
ӡ༻ͷ൵ت͜͝ αʔόʔࢹ;BCCJY ,JCBOB αʔόʔ͕ଟ͍ͷͰ&MBTUJDTFBSDIʹϩ άΛಥͬࠐΜͰ͓͍ͯ,JCBOBͰݕࡧˍ ϰΟδϡΞϥΠζ
ϏδϡΞϥΠζͷྫ σʔλΛ&MBTUJDTFBSDIʹͭͬ͜ΜͰ͓͍ ͔ͯΒɺϏδϡΞϥΠζ༻ͷΫΤϦΛΈ্ ͛Δˠ͙͢ʹάϥϑ͕࡞ΕΔ
ར༻ͷϐʔΫ࣌
ར༻ͷϐʔΫ࣌ ޕޙग़ࣾͳͷͰෛՙରԠͯ͠ڐͤΔ
࣮ࡍʹى͖ͨτϥϒϧ ͍͔ͭ͘ڭ܇ͱͯ͠ಘͨͷΛհ ϝϞϦϦʔΫʢόΠφϦɺ1PSUʣ /*'ίʔυͰΫϥογϡ ϩάͰԠෆೳʹͳΓଓ͚Δ
ɿϝϞϦϦʔΫ ӡ༻ͯ͠͠Β͘ܦۭ͖ͬͯϝϞϦ͕͡Θ͡ Θݮ͍ͬͯ͘͜ͱ͕Θ͔ͬͨ ಈը৴αʔόʔͰൃੜɻͦΕҎ֎ͷαʔόʔ Ͱى͖ͳ͔ͬͨ ࠷ॳͳ͔͕ͬͨɺΞΫηε͕૿͑Δʹ ͭΕਂࠁԽɻ࠷ऴతʹिؒ࣋ͨͳ͘ͳͬ ͨ
ௐࠪɿϝϞϦϦʔΫ &SMBOH7.ͩͱ͍͍ͩͨଟ͍ύλʔϯ̎ͭ ϓϩηεϦʔΫ όΠφϦϦʔΫ ͜ΕΒ࣌ʑݟ͔͍͕ͭͬͯͨʢস͑ͳ͍ʣɺࠓճ ͦ͏Ͱͳ͔ͬͨ 1PSUʹΑΔϦʔΫ
1PSUʹΑΔϦʔΫ 5$1௨৴Ͱར༻͞ΕΔ1PSU͕֬Ͱղ์ ͞Εͳ͍͜ͱ͕͋ͬͨ ࠷ऴతͳEJGG ૹ৴લʹՃ TPDLFUDMPTFલʹՃ ok = inet:setopts({linger, {true,
0}). ok = inet:setopts({linger, {false, 0}).
ɿ/*'ͰΫϥογϡ &SMBOH7.͔ΒωΠςΟϒίʔυΛݺͼग़ ͢ඞཁׂ͕ͱΑ͋͘Γ·͢ ֎෦ϓϩάϥϜͷ࣮ߦͱ͔ Γ͔ͨʹ1PSUͱ/*'͕͋Δ /*'Ͱͬͯ͠·ͬͨͳ͠
ɿ/*'ͰΫϥογϡ /*' /BUJWF *NQMFNFOUFE 'VODUJPO &SMBOH$ͷڮ ͕͠Մೳ IUUQFSMBOHPSHEPDUVUPSJBMOJGIUNM
ɿ/*'ͰΫϥογϡ $͕ݺΔʹͳΜͰ࣮ߦͰ͖Δ ٯʹݴ͏ͱ7.ͷՃޢΛड͚ΒΕͳ͍ ࢮΜͩΒɺ&SMBOH7.͝ͱࢮʹ·͢ 1PSUͳΒ1PSUΛͬͯΔ1SPDFTT͚ͩ ࢮͰࡁΉʁ
ରࡦɿ/*'ͰΫϥογϡ όάΛͻͨ͢Β௵͢ SFDPOͰͳ͘HEC͕༗༻ ιʔείʔυ͕ެ։͞Ε͍ͯͨͷ͕͍ͩͬͨ ෳͷόάΛ௵ͯ͠Ҏདྷϲ݄མͪͯͳ͍
ɿϩάͰ٧·ͬͨ ΞΫηε͕ଟͯ͘εέδϡʔϥʔ͕٧·ΓɺॲཧͰ͖ ͳ͘ͳΔ ॲཧͰ͖ͳ͘ͳͬͯΤϥʔϩάग़ྗ͕૿͑Δ ϩάग़ྗͷ͍ͤͰ͞Βʹεέδϡʔϥʔ͕٧·Δ αʔόʔԠෆೳʹ&TIFMMΞλονෆՄ ϩάग़ྗલʹҰ࣌อଘ͢ΔͱϝϞϦ͕ͳ͘ͳΔͷͰ /(
ରࡦɿϩάͰ٧·ͬͨ ͱΓ͋͑ͣग़ྗ͢ΔϩάͷྔΛݮΒͨ͠ ϩΪϯάϥΠϒϥϦΛߋ৽͠ɺΩϡʔαΠζ ΛΈͯେྔͷϩά͕ग़Δͱ͖ʹग़ྗΛఘΊ Δ͜ͱͰରԠ
ͦͷଞʢ͕࣌ؒ͋Εʣ ෆ۩߹ௐࠪSFDPOਆ SFDPO@USBDFͱ͔ HFO@UDQTFOEλΠϜΞτͰࣦഊ͠ ͨͱ͖ʹͲ͜·Ͱૹ͔ͬͨΘ͔Βͳ͍ ͪΐͬͱͣͭૹΔ
ͦͷଞʢ͕࣌ؒ͋Εʣ Ұ͕$16͢Δͱ&SMBOHΫϥελʔ ͷશ෦͕͢Δ ར༻ϥΠϒϥϦͷόάͩͬͨͷͰ௵ͨ͠
ͳΜͰ&SMBOHʹͨ͠ʁ ϗοτίʔυϩʔσΟϯάͷΈͰϓϩ ηεແఀࢭͰͷߋ৽͕ϥϯλΠϜͰఏڙ େنͳαʔόʔؒ௨৴ΫϥελʔΛߏங ͍͢͠ ҆ఆ͍ͯ͠ΔˍރΕ͍ͯΔ
ࣄͰ&SMBOHͬͯͲ͏Αʁ &SMBOH։ൃܦݧऀ΄ͱΜͲ͍·ͤΜ ฐࣾͷผϓϩμΫτͰॻ͍ͨ͜ͱ͕͋Δਓ ͕͍Δఔ ࠓޙੈؒʹ&MJYJS։ൃܦݧऀ͕૿͑ͦ͏ʁ ݴޠࣗମখ͍͞ͷͰΘΓͱͳΜͱ͔ͳΔ 051׳Ε͕ඞཁ
ࢲͷ߹ χίχίJ1IPOF χίχί"OESPJE χί χίੜ์ૹͳͲͷαʔϏε։ൃΛܦݧ ࣄͰ$ $ +BWB 4DBMB 1)1
3VCZ "DUJPO4DSJQUͳͲΛ༻ ࠓߋ&SMBOH&MJYJSҰͭ૿͑ͯͦΜͳʹා ͘ͳ͍ ͱ͓͏
ͲͪΒ͔ͱ͍͏ͱେنαʔόʔͷ։ൃ ͷ΄͏͕͍͠ 31$ͷ్தͰαʔόʔ͕μϯ͢Δ͔ ͠Εͳ͍ɻෆ߹ঢ়ଶʹམͪͳ͍Α ͏ʹͲ͏ίʔσΟϯά͢Δ͔ Ͳ͏͍ͬͨϩάΛग़ྗ͢Δͱෆ۩߹ௐ ͍͔ࠪ͢͠ߟ͑ͯϩάΛग़͢ ͳͲͳͲ
υϫϯΰ &MJYJS&SMBOH ΤϯδχΞΛ ืू͍ͯ͠·͢ IUUQEXBOHPDPKQSFDSVJU
υϫϯΰ &MJYJS&SMBOH ΤϯδχΞΛ ืू͍ͯ͠·͢ IUUQEXBOHPDPKQSFDSVJU ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠