グローバル展開を支える量子的なサービス設計 #mercariday / mercariday2017-api

by Hiraku NAKANO

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άϩʔόϧల։Λࢧ͑Δ ྔࢠతͳαʔϏεઃܭ 2017/01/20 Mercari DAY Hiraku NAKANO

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About Me • த໺ ୓(@Hiraku) • ϝϧΧϦͷJP൛ BizDevνʔϜॴଐ • αʔόʔαΠυ୲౰ɺPHP͹͔Γॻ͍ͯΔ • ೖࣾͯ͠Ұ೥ͪΐͬͱ

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όοΫΤϯυܥͷ৬छ 43& αʔόʔαΠυ w ৴པੑʹϑΥʔΧε w ύϑΥʔϚϯενϡʔχϯά  ͕ओઓ৔ w 0QT΋݉ͶΔ w ػೳ։ൃʹϑΥʔΧε w υϝΠϯϩδοΫ͕ओઓ৔ w 1ͱηοτͰಈ͘ ࢲ͸ͬͪ͜ʹॴଐ

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άϩʔόϧల։Λࢧ͑Δ ྔࢠతͳαʔϏεઃܭ 2017/01/20 Mercari DAY

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"FacebookͩͱɺԿສͱ͍͏ ABςετ͕ಉ࣌ʹ૸͍ͬͯΔɻ  ϝϧΧϦͰ΋਺ेຊ͸૸ͬͯΔɻ ύλʔϯ͸๲େʹ͋Δ"

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͹ͬ͘  ͑ΜͲ Web൛

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͹ͬ͘  ͑ΜͲ Web൛ ͦ͏͍͏Πϝʔδ͡Όͳ͍

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͹ͬ͘  ͑ΜͲ Web൛ ͳΜ͔ྠֲ͕  Α͘෼͔Βͳ͍…

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͹ͬ͘  ͑ΜͲ • ೔ຊ൛ʹΞΫηε • ΫϥΠΞϯτόʔδϣϯ͕XX • ϩάΠϯதͷϢʔβʔID͕YY • ୺຤͕ZZ • ΞΫηεͨ࣌͠ࠁ͕TT • etc ΍ͬͱྠֲ͕  ݟ͑ͯ͘Δ

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"ྔࢠత"ͱ͍͏ൺᄻ • ݟΔਓʹΑͬͯҧ͏ಈ͖ʹͳΔ • ؍ଌ͠ͳ͍ͱΑ͘෼͔Βͳ͍ • શύλʔϯʹରͯ͠ໃ६ͳ͘ಈ࡞͢Δ

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ͳͥ"ྔࢠత"ͳͷ͔ • Ծઆ࣮ݧओٛ • ࣮ݧͨ͠΄͏͕଎͘ਖ਼ղʹͨͲΓண͚Δ • ֎෦؀ڥͷಈ͖͸ෆ࣮֬ • ಥવͷো֐ɾ֎෦͔Βͷ߈ܸ • શͯ૝ఆ͢Δͷ͸ࠔ೉

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"ྔࢠత"ͳιϑτ΢ΣΞ͸ • ෳࡶɾϝϯςϯφϯεେม • ߟྀ࿙Εͱ͔ى͖ͳ͍ͷʁ • ϝϧΧϦ͸Ͳ͏࣮ݱ͍ͯ͠Δͷ͔ʁ

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ࠓ೔ ࿩͢͜ͱ 1. ϞόΠϧΞϓϦͷόοΫΤϯυʹ  ٻΊΒΕΔ͜ͱ 2. ॏཁͰ͸ͳ͔ͬͨ͜ͱ 3. mercari-apiͷࢥ૝ 4. ࠓΛੜ͖࢒ΔͨΊʹ

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ٻΊΒΕ͍ͯΔ͜ͱ

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͹ͬ͘  ͑ΜͲ • ϦϦʔεͷίετ͕௿͍ • ׬શʹίϯτϩʔϧԼ • ϦϦʔεޙ΋ؚΉ • ඇެ։ʹͰ͖Δ

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όοΫΤϯυ͔ͩΒͰ͖Δ͜ͱ • ࢪࡦΛ਺ଧͭͨΊͷ౔୆ • ʮࠓ͙͢ϦϦʔεʯ͕ৗʹՄೳͳଘࡏ • ΞυϗοΫͳো֐ରԠྗ • σʔλͷ࠷ऴ๷น

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΋ͪΖΜલఏͱͯ͠ • ඼࣭ • ύϑΥʔϚϯε • কདྷతʹഁ୼͠ͳ͍ݟ௨͠ • ௿Լ͠ͳ͍։ൃ଎౓ • ηΩϡϦςΟ߈ܸ΁ͷରԠ

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શͯରॲ͢Δͷ͸େม

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࣮͸ॏཁͰͳ͔ͬͨ͜ͱ

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ίʔυతʹඒಙͱ͞ΕΔ΋ͷ • ൚༻ੑ • ඒ͠͞ • Ұ؏ੑ ϝϧΧϦ಺Ͱ͸ Ձ஋͕௿Ί

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൚༻ੑͳͲͳ͍ • ެࣜΫϥΠΞϯτͷΈߟྀ • ͔͠΋αϙʔτόʔδϣϯͷΈ • ͦΕҎ֎͔Β͸࢖͑ͳ͍͠ɺ  ࢖͏͜ͱ΋૝ఆ͠ͳ͍

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WebAPIͱͯ͠ͷඒ͠͞ • RESTful, HATEOASͱ͍ͬͨ  ϕετϓϥΫςΟε…ͱ͞ΕΔ΋ͷ • શવकͬͯͳ͍ • ࠷ॳ͸͋ͬͨ͸ͣͳͷ͕ͩ • ެࣜΫϥΠΞϯτʹ߹Θͤͯվम͠·͘ΕΔ͜ͱ ͷ΄͏͕ॏཁ

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Ұ؏ੑͷͳ͞ • ※σʔλ͸Ұ؏ੑࢮकͰ͢Α • ίʔυͱͯ͠͸ேྩ฻վ ͲΜͱདྷ͍ʂ • Ή͠ΖҰ؏ੑͷͳ͍मਖ਼ʹ଱͑ΒΕΔΑ͏ʹ ίετΛࢧ෷͏΂͖

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ϓϩάϥϚͱͯ͠ͷ৺ڥ • ΋ͪΖΜɺඒ͘͠Ұ؏ͯ͠ந৅Խ͞Εͨ΋ͷ Λ࡞Γ͍ͨ… • ৽ن։ൃͳΒɺ͍ͭ΋ເΛ٧ΊࠐΉΑ͏ʹ͸ ͍ͯ͠Δ • ʮमਖ਼͍ͨ͠ʯͱ͍͏νέοτΛ೔ʑ࡞ͬͯ ͍Δ

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PragmaticͰ͋Δ͜ͱ  DogmaticʹͳΒͳ͍͜ͱ • ϦϦʔεΛ᪳᪯͠ͳ͍ • ෆ׬શͰ΋ಈ͍͍ͯΔํ͕ΑͬΆͲ͍͍ • Be Professional Day Ͱ៉ྷʹ͢Δ

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mercari-api

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ιʔείʔυඇެ։ ͳͷͰɺུ͚֓ͩ

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ٕज़తΩʔϫʔυ • ಠ࣮ࣗ૷ͷJSON over HTTPS WebAPI • nginx/OpenResty, Go, PHP, MySQL, Q4M, Parallel-Prefork, Memcached, Solr, ... • DietCakeϕʔεͷϑϨʔϜϫʔΫ

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࣮ࡍͷߏ੒͸ ൃද΋ଟ͍ͷͰׂѪ

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mercari-api ͷࢥ૝

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ࢥ૝తΩʔϫʔυ • ബ͍ϑϨʔϜϫʔΫɾ۪௚ͳ࣮૷ • ଎͕͞શͯΛղܾ͢Δ • Ψʔυઅͷଟ༻ • ୯ҰϦϙδτϦͱ͍͏ᐫ

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DietCake • ඇৗʹബ͘ɺ༨ܭͳ͜ͱ͸Կ΋͠ͳ͍ • શମతʹ۪௚ͳ࣮૷ • ϑϩϯτίϯτϩʔϥʔ͔Βॱ൪ʹಡΈਐ Ί͍͚ͯ͹ඞͣ೺ѲͰ͖Δ • ϑϨʔϜϫʔΫଆ͕͋·Γറͬͯ͜ͳ͍

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଎͕͞શͯΛղܾ͢Δ • APIࣗମͷ଎͞ • ଟগͷແཧ͕Ͱ͖Δঢ়ଶΛอͭ • ։ൃͷ଎͞ • ͙͢ʹফ͢ͳΒΞυϗοΫͳରԠ΋Մೳ

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Α͋͘Δޫܠ • 1ि͙ؒΒ͍Ͱ։ൃ+QA -> ϦϦʔε • Ωϟϯϖʔϯ͕ऴΘͬͨͷͰશ࡟আ

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Ψʔυઅͷଟ༻ • if (૝ఆͱҧ͏) { throw new Error; } • Α͋͘Δྫ • ʮUSͰͷΈʯ • ʮABςετέʔε˓˓൪ͷAύλʔϯʯ • ʮ࠷৽ͷΞϓϦΛ͓࢖͍Լ͍͞ʯ

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୯ҰϦϙδτϦͱ͍͏ᐫ • JP/US/GB͸ઃఆͱDBͰ੾Γସ͑ • αʔόʔߏ੒ɺ։ൃ؀ڥɺϊ΢ϋ΢ڞ௨Խ • ฐ֐΋͋Δ͕ࠓͷͱ͜Ζڐ༰ൣғ

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mercari-api ۪௚ͳ࣮૷ ˣ ։ൃͷॠൃྗ ੑೳ Ψʔυઅଟ༻ ˣ গ͠Ͱ΋ෳࡶ౓ΛԼ͛Δ ୯ҰϦϙδτϦ ˣ ഁ୼͠ͳ͍ઃܭΛ  ڧཁ͞ΕΔ

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ࠓΛੜ͖࢒ΔͨΊʹ

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ϝϧΧϦʹશ͘༨༟͸ͳ͍ • USϓϩμΫτ΋·ͩ·ͩେ੒ޭͰ͸ͳ͍ • ۪௚ͳվળʹΑΓɺ੒௕֯౓Λ͞ΒʹߴΊͳ ͍ͱɺγϦίϯόϨʔͷڝ߹ʹ͋ͬͱ͍͏ؒ ʹෛ͚Δ • ݶΒΕͨϦιʔεΛ࢖ͬͯɺҰยͷແବͳ͘෺ ࣄΛਐΊΔ͜ͱ͕ۃΊͯॏཁɻ

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Ͱ͖ͳ͍͜ͱ΋ଟ͍ • খखઌͷςΫχοΫͰ͸ෳࡶ౓͸Լ͕Βͳ͍ • όάΛϦϦʔεͯ͠͠·͏͜ͱ΋͋Δ • ࣦഊͩͬͨ΋ͷ͸਺͑੾Εͣ • ͔͠͠ڝ߹͸଴ͬͯ͸͘Εͳ͍

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ʮΤϯδχΞϦϯά͚ͩͰ  ղܾ͠Α͏ͱ͠ͳ͍ʯ

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ʮ࡞ΓతʹࣗಈςετͭΒ͍ʯ ˣ ؾ߹͍ͰϨϏϡʔ͠·͢  QAͰ֬ೝ͠·͢

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ʮ඼࣭ʹෆ͕҆࢒Δ…ʯ  ↓ ΍͹ͦ͏ͳΒ͙͢໭͠· ͠ΐ͏  ෛՙ஫ࢹ͠·͢

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Τοδέʔεͷ࣮૷͕େม  ↓ ☺CSखΦϖͳΒରॲ͍͚ͦ͏  ରԠϚχϡΞϧͰ͖ͨΑʔ

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େࣄʹ͍ͯ͠Δ͜ͱ • ԿΑΓ΋ϓϩμΫτͱͯ͠੒ޭ͢Δ͜ͱ • 80% ͰϦϦʔεͯ͠ɺલʹਐΊΔ • ࢒Γ͸ผͷखஈΛ୳ͯ͠र͏ or མͱ͢ • ৽ػೳ͸چΫϥΠΞϯτͰಈ͔ͳ͍͚Ͳɺ Ϋϥογϡ͸ͤ͞ͳ͍

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·ͱΊ

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Ҏ্͸ࢲֶ͕Μͩ͜ͱ • ࢲͷೖࣾͨ͠ࠒʹ͸طʹ͋ͬͨจԽ • ͓ͦΒ͘ૂͬͨ෦෼ͱɺ݁Ռతʹͦ͏ͳͬͨ෦ ෼͕͋Δ • ྠֲͷᐆດͳྔࢠతͳαʔϏε • ͜Ε͔Β΋ͦ͏Ͱ͋Γଓ͚ΔͩΖ͏͠ɺ  ࢧ͑ΔͨΊͷίετ΋ࢧ෷͏