スタートアップ立ち上げの主力言語にgo言語を採用してみた話

by Shuji OCHI

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ελʔτΞοϓ্ཱͪ͛ͷ ओྗݴޠʹHPݴޠΛ ࠾༻ͯ͠Έͨ࿩ VNFEBHP ӽஐम࢘

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·ͣ͸ࣗݾ঺հ

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ӽஐम࢘ʢ͓ͪ͠Ύ͏͡ʣ w ϑϦʔΤϯδχΞ w ϞόΠϧιϦϡʔγϣϯͱιʔ γϟϧήʔϜͷձࣾΛܦͯ ೥ಠཱ w J04ΞϓϦ։ൃ w 4XJGU0CKFDUJWF$ w σʔλ෼ੳ w 1ZUIPO

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ຊ೔ͷ͓࿩

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w ͜Ε·ͰͷܦҢ w ٕज़ͷ࿩ w ͍·ͷͱ͜Ζͷ݁࿦

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͖͔͚ͬ

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ాଜ݈ଠ࿠ࢯ .*/5גࣜձࣾ$&0ˍϑΝ΢ϯμʔ ݩɾγφϓεʢגʣ$&0ˍϑΝ΢ϯμʔ ࿈ଓىۀՈ

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ΦϯϥΠϯαϩϯ 4ZOBQTF ༗໊จԽਓΛଟ਺༴͠ɺΦϯϥΠϯα ϩϯͷᅘ໼ͱͳΔαʔϏε J04ΞϓϦͷ෦෼Λ։ൃ ʢ೥݄೔4PVUʣ ϦϦʔεݩגࣜձࣾγφϓε

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࢑ఆ$50ʢతͳ΋ͷʣ Λ΍Δ͜ͱʹ w ։ൃϦʔυతͳ࢓ࣄ͸໿೥ͿΓ w αʔόαΠυ։ൃ΋ͦͷ͘Β͍ w ࠓӜౡɻɻɻ

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ͳʹ΍Δͷ

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ͱ͍͏ͷ΋ɻɻɻ

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લճͷ൓ল

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ΦϯϥΠϯαϩϯ 4ZOBQTF ༗໊จԽਓΛଟ਺༴͠ɺΦϯϥΠϯα ϩϯͷᅘ໼ͱͳΔαʔϏε J04ΞϓϦͷ෦෼Λ։ൃ ʢ೥݄೔4PVUʣ ϦϦʔεݩגࣜձࣾγφϓε

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RJJUBDPN ʮϨΨγʔ։ൃ؀ڥΛࠓ෩ͷ։ൃʹ͚ۙͮΔͨΊʹҰ೥΍͖ͬͯͨ͜ͱʯΑΓ

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ٕज़తෛ࠴ͷࢁ w ։ൃνʔϜϝϯόʔθϩ໰୊ w όʔδϣϯ؅ཧ͞Εͯͳ͍໰୊ w ϩʔΧϧ։ൃ؀ڥ͕ଘࡏ͠ͳ͍໰୊ w ౰࣌͸ຊ൪؀ڥ͕։ൃ؀ڥ w ຊ൪ͷ&$ͷίʔυΛͦͷ··मਖ਼ w ̍ͭͷ&$Πϯελϯεʹશ෦৐͍ͬͯΔ໰୊ w -".1͕̍ͭͷ&$Πϯελϯεʹશ෦ೖ͍ͬͯΔ w FUD RJJUBDPN ʮϨΨγʔ։ൃ؀ڥΛࠓ෩ͷ։ൃʹ͚ۙͮΔͨΊʹҰ೥΍͖ͬͯͨ͜ͱʯΑΓ

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࠾༻ w ஌໊౓͕ͳ͍ʢ͋ͨΓ·͚͑ͩͲʣதɺͲ͏΍ͬ ͯ༏लͳٕज़ऀΛ͋ͭΊΔ͔ w ͳʹ͔Θ͔Γ΍͍͢ັྗ͕ͳ͍ͱɻɻɻɻ

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౜ಥͰ͕͢

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αϐΤϯεશ࢙

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ਓؒʹग़དྷͯଞͷಈ෺ʹग़དྷͳ͍͜ͱ ਓྨͷൃలͷ伴͸ɺ ஌Βͳ͍ਓಉ͕࢜ ڞ௨ͷཧ೦΍ཧ૝Λ৴͡Δ͜ͱ͕Ͱ͖ɺ Ұகஂ݁Ͱ͖͔ͨΒ

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lΤϯδχΞʹͱͬͯɺ ʮڞ௨ͷཧ೦΍ཧ૝Λମݱ͢Δ΋ͷʯ ͱ͸Կ͔ʁz

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ϓϩάϥϛϯάݴޠ

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ൺֱݕ౼ͯ͠ΈΔ

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ٕज़ͷ࠾༻ج४ ௨ৗ͸͜ͷ఺͕ॏࢹ͞ΕΔ w Ϣʔβਓޱ w ଟ͍ํ͕ྑ͍ͱ͞ΕΔ w ߹໨తੑʢػೳʣ w ࠷௿ݶ͸Έͨ͞ͳ͍ͱ w ϑΟϩιϑΟʔ w ։ൃɾઃܭࢥ૝

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ٕज़ͷ࠾༻ج४ w Ϣʔβਓޱ w ଟ͍ํ͕ྑ͍ͱ͞ΕΔ w ߹໨తੑʢػೳʣ w ࠷௿ݶ͸Έͨ͞ͳ͍ͱ w ϑΟϩιϑΟʔ w ։ൃɾઃܭࢥ૝ ຊ౰ʹେࣄͳͷ͸ͬͪ͜

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ٕज़͕·ͱ͍ͬͯΔࢥ૝͕૊৫Λࢧ഑͢Δ

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8FC։ൃͷఆ൪Ͳ͜Ζ w 1)1ɺ3VCZɺ+BWBͱ͔ w ΤϯδχΞ૚͕ް͍ w τϨʔυΦϑ w ਓ਺ଟ͗͢ w ັྗతͳڝ߹΋ଟ͍ʢ͸ͣʣ w ͭ·Γ4/ൺখ͍͞ w ˠ࠾༻ίετʢखؒͱ࣌ؒʣߴ͍ w ˠ͕࣌ؒͳ͍

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+BWB4DSJQU w ࡢ೥൒೥ 3FBDU3FEVY ΍ͬͯͨ w 3FBDU3FEVYͦͷ΋ͷ͸͍͍͕ɻɻ w ͍ΘΏΔ+BWB4DSJQUർΕʹͳͬͨ w ڝ૪͕ܹ͍͠ɺ໺৺తɾ݂ؾ੝ΜͳจԽ w จԽ͕ͪ͝Όͪ͝Ό w มԽ͕଎͍ͷͰɺ௕͘࢖ͬͯϦϓϨʔεͮ͠Β͍αʔόαΠ υʹ͸ਖ਼௚Ͳ͏͔

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ؔ਺ܕݴޠ w FMJYJS͋ͨΓ͸ڵຯ͋Δ͚Ͳɺɺɺ w Ϣʔβ૚͕ബ͗͢ΔͷͰ͸ w पΓʹ͍ͳ͍ͷͰΠϝʔδΘ͔ͳ͍ w ϋΠϒϩ΢͗͢Δਓ͕ೖͬͯϋϯυϦϯάͰ͖ ͳ͔ͬͨΒͲ͏͠Α͏

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4XJGU w ݸਓతʹ͸Ұ൪ಘҙ w αʔόαΠυ޲͚։ൃͷ༻్΋޿͕͖ͬͯͨΒ ͍͠ w ͱ͸͍͑લ్͸ෆಁ໌ w ࣌ظঘૣ͔΋

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1ZUIPO w ΘΓͱܦݧ௕͍ w ݸਓతʹ͸Ұ൪ॱ౰ͳબ୒ w Ϣʔβ਺૿Ճத w ͪΐͬͱ๯ݥͯ͠Έ͍ͨؾ΋͢Δ

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HPݴޠ

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पΓͰɺHPΛ͸͡ΊͨΑɺ ͍ͬͯͬͯΔਓͰɺ HPΛ͚ͳ͍ͯ͠ΔਓΛݟͨ͜ͱ͕ͳ͍ ஌Γ߹͍ͷ1ZUIPOJTUB͕ ͸͡Ίͨͱ͍͏࿩Λྑ͘ฉ͘

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ͪΐͬͱௐ΂ͯΈΑ͏

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ຊΛങ͖ͬͯͨ

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͜ͷਓͬͯɻɻɻ

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೥લʹษڧͨ͠

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͜ͷຊͷɻɻ

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Χʔχϋϯઌੜʂ

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Ͳ͏΍Β ͓ͬ͞Μʹ༏͍͠ ݴޠΒ͍͠

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͓ͬ͞Μʹ༏͍͠ݴޠʢ̍ʣ w ϓϩάϥϛϯά͸$ݴޠͰ͸͡Ίͨ w ϙΠϯλͷ֓೦͕͋ΔʢΑΓચ࿅͞ΕͨܗͰʣ w +BWB4DSJQUർΕͰ΋͏ମྗ͕ͳ͍ w 1ZUIPOಉ༷ɺόοςϦʔಉࠝ w ४උɾ؀ڥߏஙָ͕ w γϯάϧόΠφϦ w Ϋϩε։ൃ͕σϑΥ w ˠΫϥ΢υίϯϐϡʔςΟϯά࣌୅ʹ΋޲͍ͯͦ͏

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͓ͬ͞Μʹ༏͍͠ݴޠʢ̎ʣ w &NBDTʢ4QBDFNBDTʣͷαϙʔτ͕ߦ͖ಧ͍͍ͯΔ w ௥ՃΧελϚΠζ΄ͱΜͲແ͠Ͱɺ w ϦΞϧλΠϜͰHPMJOUνΣοΫ w อଘ࣌ͷHPGNU w BVUPDPNQMFUF ࣗಈิ׬ɾαδΣετ w HPEPDදࣔ

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ืूͯ͠Έͨ ాଜ͞Μ͕֤छ4/4Ͱ΋ݺͼ͔͚·ͨ͠

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݁Ռ w Ԡื͸ͦΕ΄Ͳଟ͘͸ͳ͔ͬͨʢ૝ఆ௨Γʣ w ͔͠͠Ԡืऀ͸Ͳͷํ΋ϋΠεϖοΫʂ w &ࢯʢαʔό։ൃ୲౰ʣ w HPܦݧ೥ w 5ࢯʢΫϥ΢υΠϯϑϥ୲౰ʣ w "84ͷΤΩεύʔτߴෛՙαΠτͷܦݧ w HPܦݧ͋Γ w ͱΘ͔ͣिؒऑͰແࣄܖ໿Ͱ͖·ͨ͠ʂ

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ܦҢ Ԡื ΩοΫΦϑ ̍ ̌ ̍ ̎ ϝϯόʔืू ٕज़ௐࠪɾॳظ։ൃ ։ൃຊ֨Խ ݱࡏʹࢸΔ ։ۀ४උ ࣄۀܭըมߋ ̍ ̎

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ମ੍ w ݄͔Β࢝ಈ w ϑϧϦϞʔτ ؔ౦ ؔ੢ &ࢯ 5ࢯ 4ࢯ ݄δϣΠϯ༧ఆ

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w ݄͔Β࢝ಈ w ϑϧϦϞʔτ w υΩϡϝϯτڞ༗͸FTBJP w ೔ৗͷ࿈བྷ w 4MBDL w (JU)VCνέοτˍϨϏϡʔ ίϛϡχέʔγϣϯ

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ٕज़ͷ࿩

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ઃܭํ਑ w ૿ాږஶʮݱ৔Ͱ໾ཱͭγε ςϜઃܭͷݪଇʯ w υϝΠϯۦಈΛҙࣝ

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ߏ੒؅ཧ w %PDLFSʹΑΔίϯςφϕʔεͷӡ༻ w 'BDUPS"QQ w %PDLFS$PNQPTFʹΑΔ݁߹ࢼݧ w $*ɿ$JSDMF$* w σϓϩΠɿ"NB[PO&$4

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ߏ੒؅ཧʢ̎ʣ w औΓ૊Έத w GBDUPS"QQͷߟ͑ํ w ͬ͘͟Γ͍͏ͱɺɺ w ԿͰ΋ίʔυԽͯ͠؅ཧ w ԿͰ΋ࣗಈԽ w ؀ڥґଘ͢Δಈ࡞͸ઃఆʹΑͬͯ֎෦ʹ௥͍ग़͢ w ϩʔΧϧʹ΋ͷΛ࣋ͨͳ͍ w ֎෦αʔϏεʹग़དྷΔ͚ͩ೚ͤΔ

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γεςϜߏ੒ਤ $MPVEJOBSZ

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ϥΠϒϥϦɾϑϨʔϜϫʔΫ w ϥΠϒϥϦɾϑϨʔϜϫʔΫ w HPB w WJQFS w EBUBCBTFTRM YPˡ/FX w 03ϚούʔͰ͸ͳ͘ w %#εΩʔϚɾ42-͔ΒHPͷΞΫηείʔυΛੜ੒

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HPB w 8FC"1*αʔϏεΛ࡞ΔͨΊͷแׅతͳ࢓૊Έ w ಠࣗܗࣜͷ%4-ʢHPݴޠʣ w ίʔυδΣωϨʔλɾϑϨʔϜϫʔΫ

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HPBWTTXBHHFS HPB 4XBHHFS %4- HP :".- +40/ ੜ੒͢Δίʔυ HP TXBHHFS ෳ਺ݴޠ

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HPBͷར఺ w શ෦ೖΓ w ίϯτϩʔϥʢͷTDB⒎PMEJOH w σʔλఆٛ w Τϯίʔμɾσίʔμ w ϩΨʔ w ϧʔλ w ΫϥΠΞϯτίʔυ w %4-ͷϑΝΠϧ෼ׂ͕͠΍͍͢ w 4XBHHFS TXBHHFSDPEFHFOͩͱ ͸ංେ͕ͪ͠ w ΠϯΫϦϝϯλϧʹඞཁͳ෦෼ͷίʔυ͚ͩ࠶ੜ੒ͯ͘͠ΕΔ w ΫϥΠΞϯτίʔυ·Ͱు͍ͯ͘ΕΔͷͰɺ&&ͷςετ·ͰHPBͱHPݴޠͷதͰ׬݁ͤ͞΍͍͢

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&&ςετ ςετ ର৅ ςετ ϓϩάϥϜ "1* ಺༰ νΣοΫ

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HPB%4- package design import ( . "github.com/goadesign/goa/design" . "github.com/goadesign/goa/design/apidsl" ) var _ = Resource("bottle", func() { BasePath("/bottles") DefaultMedia(BottleMedia) Action("show", func() { Description("Get bottle by id") Routing(GET("/:bottleID")) Params(func() { Param("bottleID", Integer, "Bottle ID") }) Response(OK) Response(NotFound) }) }) ʙதུʙ Ϧιʔε ΞΫγϣϯ

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$MPVEJOBSZ w ը૾ͷอଘɾՃ޻ʹಛԽͨ͠Ϋϥ΢υαʔϏε

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εϚϗΞϓϦ͋Δ͋Δ w αʔό͔Βड͚औͬͨ ΞΠίϯը૾ͷαΠζ ͕ ௒ಛେ w Ϧετܥͷը໘දࣔͰ ϝϞϦѹഭ

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$MPVEJOBSZ w ΫϥΠΞϯταΠυͰμ΢ϯϩʔυ͢ΔαΠζ Λࢦఆ͢ΔͱɺՃ޻ͯ͠഑৴ͯ͘͠ΕΔ w ը૾ͷࢦఆ͸1VCMJD*%ͱ͍͏*%จࣈྻͰࢦఆ w αʔϏεଆ%#͔ΒΫϥΠΞϯτʹ͸ࣄલʹ 1VCMJD*%Λڭ͑Δ

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ࠓޙͷ՝୊ w ΋Ζ΋Ζ࢓૊Έ࡞Γ͕੔͖ͬͯͨ w ࣮૷ΛՃ଎͍ͯ͘͠ w ෛՙରࡦ