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GraphQL GatewayΛ Node.jsͰ࡞ͬͯΔ࿩ haruhiko kobayashi 2018/12/6

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!2 ࣗݾ঺հ Haruhiko Kobayashi Chief Tech Lead εϖʔεϚʔέοτ yahooͷόοΫΤϯυΤϯδχΞ ग़਎Ͱ͢ɻϑϩϯτΤϯυͱΠϯ ϑϥ΋Ұ௨Γ͔ͬͨ͡ͷͪʹεϖʔ εϚʔέοτʹJoin

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!3 Agenda

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!4 Agenda • GraphQLͷ͝঺հ • Microservicesͱͷ૊Έ߹Θͤ • GraphQL Gateway on Node.js

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GraphQLͷ͝঺հ

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!6 GraphQLͷ͝঺հ • Facebook͕ఏএͨ͠API࢓༷ • ڧ͍ܕγεςϜ • ࢀরܥ͸query • ߋ৽ܥ͸mutation • RESTͱରൺͯ͠ޠΒΕΔࣄ͕ଟ͍ جຊతͳ࿩

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!7 GraphQLͷ͝঺հ • Partial Response • Batch Request • graphdoc • Graphiql σϑΥϧτػೳ

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!8 Partial Response ࢦఆͨ͠σʔλͷΈऔಘ

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!9 Batch Request 1౓ͷAPIίʔϧͰෳ਺ͷϦιʔεΛऔಘՄೳ

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!10 graphdoc GraphQL API͔ΒυΩϡϝϯτࣗಈੜ੒

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!11 graphdoc GraphQL API͔ΒυΩϡϝϯτࣗಈੜ੒ confidential

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!12 GraphiQL GraphQLͷΫΤϦ࣮ߦ؀ڥ

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!13 ಋೖ࣌ظ 2017೥ࠒ͔Β෦෼తʹಋೖ • Client: Apollo Client • Server: Rails RESTͱൺ΂ͨ։ൃମݧ • FEɾΞϓϦ։ൃऀ͔Β૬౰ָʹͳͬͨͱ͍͏੠ • BEͱͯ͠΋ແବͳϖΠϩʔυ࡟ݮͳͲϝϦοτ͸ଟ͍

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Microservicesͱͷ૊Έ߹Θͤ

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!15 Microservicesͱͷ૊Έ߹Θͤ • ݕࡧαʔϏε • ΞΧ΢ϯταʔϏε • ϦίϝϯυαʔϏε • etc.. ڊେͳREST API͔ΒGraphQLαʔϏεΛ੾Γग़͠த

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!16 Microservicesͱͷ૊Έ߹Θͤ API͕ଟ͗ͯ͢frontendͷਏΈ͕༧૝͞ΕΔ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL) ༧໿ (REST) FE

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!17 Microservicesͱͷ૊Έ߹Θͤ GraphQL GatewayΛrubyͰ࡞ͬͨ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL) ༧໿ (REST) FE gateway

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!18 Microservicesͱͷ૊Έ߹Θͤ Gateway͸remoteͷAPIʹϦΫΤετͯ݁͠ՌΛฦ͢

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!19 Microservicesͱͷ૊Έ߹Θͤ resolverͰผAPIΛୟ͘ confidential

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!20 Microservicesͱͷ૊Έ߹Θͤ resolverͰผAPIΛୟ͘

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!21 Microservicesͱͷ૊Έ߹Θͤ ՝୊1: GraphQLͷܕΤϥʔʹͳΔ confidential • GraphQL͸ఆٛ͞Ε͍ͯͳ͍ܕ͕ΫΤϦʹؚ·ΕΔͱΤϥʔ ʹͳΔ

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!22 Microservicesͱͷ૊Έ߹Θͤ ՝୊1: GraphQLͷܕΤϥʔʹͳΔ • GraphQLͷΫΤϦΛղੳͯ͠༨ܭͳ΋ͷΛফ͢ॲཧΛॻ͍ͯ ରԠ

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!23 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO confidential • ruby͸Blocking IO͕ඪ४ͷͨΊΫΤϦ͕૿͑ΔͱͲΜͲΜ஗ ͘ͳΔ

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!24 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO • ΫΤϦͷ࣮ߦΛ஗ԆධՁͯ͠1ͭͷΫΤϦʹ·ͱΊ࣮ͯߦ • graphql-batchͱ͍͏ϥΠϒϥϦͰରԠ͸Մೳ

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!25 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO • ̎ͭͷϦΫΤετΛ஗ԆධՁͤͯ͞1ͭͷϦΫΤετʹ߹੒

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!26 Microservicesͱͷ૊Έ߹Θͤ ՝୊2: Blocking IO confidential • ̎ͭͷϦΫΤετΛ஗ԆධՁͤͯ͞1ͭͷϦΫΤετʹ߹੒

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!27 Microservicesͱͷ૊Έ߹Θͤ ͜͜·Ͱͷ·ͱΊ • ৭ʑ͕Μ͹͕ͬͨෳ਺APIΤϯυϙΠϯτͱͳΔͱॲཧ͕ṫ ࡶʹͳΔ • rubyͷಛੑ͸GraphQL Gatewayʹ͸޲͍ͯͳͦ͞͏ • Node.js΁ͷҠ২Λݕ౼͠͸͡ΊΔ

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GraphQL Gateway on Node.js

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!29 Apollo Server Node.jsͷGraphQL Server࣮૷ • jsͰGraphQL API࡞Δʹ͸σϑΝΫτελϯμʔυ • Gatewayͱͯ͠ಈ͘ػೳ΋ఏڙ͍ͯ͠Δ • (ਖ਼֬ʹ͸graphql-toolsύοέʔδʹ)

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!30 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾࡦ: Schema Stitching • remoteͷGraphQL APIΛ͔͋ͨ΋localͷGraphQL APIͱͯ͠ ѻ͏ػೳͷ͜ͱ

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!31 Schema Stitching ͭ·Γ͜Εͷ͜ͱͰ͢ ݕࡧ (GraphQL) Ϩίϝϯυ (REST) ΞΧ΢ϯτ (GraphQL) ༧໿ (REST) FE gateway

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!32 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching confidential • remoteͷGraphQL APIΛlocalͷGraphQL APIͱͯ͠ѻ͏

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!33 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching • 1ͭͷqueryΛผͷAPI͔ΒऔಘͰ͖ΔΑ͏ʹͳΔ

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!34 ՝୊1: GraphQLͷܕΤϥʔʹͳΔ ղܾ: Schema Stitching • rubyͰؤுͬͯ࡞࣮ͬͨ૷͕20ߦ΄Ͳͷ࣮૷ͰղܾͰ͖ͨ • ׬શʹٕज़࠾୒ͷࣦഊ..

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!35 ՝୊2: Blocking IO ղܾ:NodeͷಛੑΛੜ͔ͯ͠Non-Blocking IOͰ௨৴ͯ͘͠ΕΔ confidential

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!36 ՝୊2: Blocking IO ղܾ:NodeͷಛੑΛੜ͔ͯ͠Non-Blocking IOͰ௨৴ͯ͘͠ΕΔ

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·ͱΊ

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!38 • ݴޠͷಛੑΛݟۃΊͯϛυϧ΢ΣΞ͸ઃܭ͢΂͖ • GraphQL GatewayελοΫ΋javascriptͰ࣮૷

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