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WebαʔϏεͷॳظ։ൃͱϚΠΫϩαʔϏεɾBFF Microservices Meetup vol.5 2017/3/30 Akatsuki Inc.ɹߴদ ਅฏ
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■ ߴদ ਅฏ (@shimpeiws) ■ WebΤϯδχΞ @ ΞΧπΩ LXࣄۀ෦ ɹɾRailsͱJavaScriptΛʑ͘Β͍ॻ͍͍ͯΔ ■ LX(ϥΠϒΤΫεϖϦΤϯε)ࣄۀ෦ ɹɾੈքதͷਓʑʹϥΠϒʢੜͷɺϦΞϧͳɺϫΫϫΫ͢Δʣ ɾΤΫεϖϦΤϯ εʢମݧʣΛఏڙ͢ΔࣄۀͰ͢ɻ ࢲ୭
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࣍ 1. ཁ݅ͱΞʔΩςΫνϟ 3. BFFͷϓϩτλΠϓ࣮ 2. ॳظ։ൃͰͷબͱूதͱෛ࠴
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1. ཁ݅ͱΞʔΩςΫνϟ
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৽ن։ൃதͷαʔϏεͷ
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■ ػೳཁ݅ ɹɾWeb͔Βελʔτ͢Δ ɹɾޙ͔ΒωΠςΟϒΞϓϦ͕ग़ΔՄೳੑߴ͍ ɹɾtoC෦εϚʔτϑΥϯϢʔβ͕ଟͱ༧͞ΕΔ ɹɾϢʔβΠϯλϥΫγϣϯ͕ଟ͍UI ɹɾSEOʹڧ͍ૣͯ͘ߏԽ͞ΕͨϚʔΫΞοϓ ɹɾݕࡧ͔Βͷྲྀೖͷൺॏ͕େ͖͍ ɹɾظతͳӡ༻ʹͳΔݟࠐΈ ɹɾߴ͍อकੑͱ(কདྷతͳ)εέʔϥϏϦςΟ͕ඞཁ ཁ݅ͱΞʔΩςΫνϟ
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■ ΞʔΩςΫνϟ ɹɾWebϑϩϯτΤϯυ ɹɾSingle Page Applicationͱͯ͠ߏங ɹɾReact + Redux ɹɾIsomorphic JavaScript ͷߏͰɺαʔόαΠυϨϯμϦϯά ɹɾαʔόαΠυ ɹɾRails ɹɾMySQL ɹɾΠϯϑϥ ɹɾ Google Cloud Platform (Google Container Engine) ɹɾ KubernetesͰίϯςφӡ༻ ཁ݅ͱΞʔΩςΫνϟ
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■ WebɺServerͷ2αʔϏεͰՔಇ͍ͯ͠Δ ཁ݅ͱΞʔΩςΫνϟ ReactͰSSR ಉҰιʔεͰΫϥΠΞϯτͰಈ࡞ ॳճΞΫηεHTTP
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■ WebɺServerͷ2αʔϏεͰՔಇ͍ͯ͠Δ ཁ݅ͱΞʔΩςΫνϟ ௨৴͕ඞཁͳλΠϛϯάͰ XHR SPAͱͯ͠ಈ࡞
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2. ։ൃॳظͰͷબͱूதͱ՝
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■ ͜͜·Ͱͷ։ൃͷνʔϜɾ։ൃ༰ɾϋΠϥΠτ ։ൃॳظͰͷબͱूதͱ՝ 2016/9~2016/11 (্ཱͪ͛ظ) 2016/12~2017/3 (։ൃॳظ) 2017/4~ (։ൃதظ) νʔϜ - 1νʔϜ - αʔό + Web 4໊ - 1νʔϜ - αʔό + Web 5໊ - ϛογϣϯຖʹ4νʔϜ ʹׂ - ϢʔβܥɺαʔϏεج ൫ܥɺΠϯϑϥܥ… ։ൃ༰ - ։ൃϑϩʔඋ - QAɾProductionڥߏங - جຊػೳΛҰ௨Γ - ΞΠςϜλΠϓͷՃ - ޱίϛͷ࣮ - શจݕࡧ(Elasticsearch) - όάɾෛ࠴Λएׯฦࡁ - άϩʔεϋοΫࢪࡦ - αʔϏεͷج൫ͱͳΔ ػೳͷ։ൃ - ΠϯϑϥɾϛυϧΣ ΞɾσϓϩΠͷඋ ϋΠϥΠτ - ΞʔΩςΫνϟɾઃܭ ࢦܾఆ - ։ൃϘϦϡʔϜ͖͑ Εͣࠞཚ - ΞʔΩςΫνϟʹେ͖ ͘खೖΕ͍ͯͳ͍ - εΫϥϜ։ൃͷӡ༻Λ ख୳Γ - νʔϜͷׂ - ϚΠΫϩαʔϏεԽͷ ਪਐ - தظతͳӡ༻ͷ։࢝
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։ൃॳظͰͷબͱूதͱ՝ ■ ͜͜·Ͱͷ։ൃͷྔ (ςετίʔυআ͘) ݁ߏͳεϐʔυͰ։ൃΛਐΊͯདྷͨ 15,000ߦ(Ϟσϧ 100ऑ) 60,000ߦ 25,000ߦ
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظʹΞʔΩςΫνϟɾઃܭ্ߟ͍͑ͨ͜ͱ https://twitter.com/joker1007/status/831371523818614789
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظͷબͱूத ɹɾશ໘తʹSingle Page Application + SSRͷߏʹ͢Δ ɹɾWhy ɹɾෳࡶͳϢʔβΠϯλϥΫγϣϯΛ࣮ݱ͍ͨ͠ ɹɾΠχγϟϧϏϡʔͷදࣔΛૣ͍ͨ͘͠ ɹɾWhat ɹɾSingle Page Application + SSRͷ࣮ݱ ɹɾHow ɹɾReact + Redux (on Isomorphic Javascript) ͷ࠾༻
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظͷબͱूத ɹɾશ໘తʹSingle Page Application + SSRͷߏʹ͢Δ ɹɾPros ɹɾμΠφϛοΫͳWebϑϩϯτΤϯυΛ࡞Γ͍͢ ɹɾSPAͷߏͰҰຊԽͰ͖Δ(ϧʔςΟϯάɺStateཧ…) ɹɾCons ɹɾ։ൃ͕͔͔Δ (ྫ͑Rails(ERBͳͲ) + jQueryʹൺͯ) ɹɾNode.jsͷϑϩϯταʔό͕Ұ૿͑ɺσϓϩΠɾཧ͕ෳࡶԽͨ͠
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظͷબͱूத ɹɾAPIઃܭͷ୯७Խ ɹɾWhy ɹɾνʔϜ։ൃ͕ͩɺυϝΠϯઃܭʹ͔͚Δ࣌ؒΛेʹͱΕͳ͍ ɹɾը໘ʹͬͨΓͦͬͨAPIͰอकੑΛԼ͛ͨ͘ͳ͍ ɹɾWhat ɹɾ͔ͳΓࡉ͔ͳཻͰͷϦιʔεࢦઃܭͰ౷Ұ͢Δ ɹɾ(جຊతʹ)RESTful API ɹɾHow ɹɾ1Ϟσϧ = 1APIʹͳΔ͜ͱ͕ଟ͍ɺॏཁͳ(େ͖͍)ͷ͚ͩϦιʔε୯ҐΛઃܭ ɹɾॳظͷϨϏϡʔͰνʔϜͷҙࣝ౷ҰΛ͍ͯͬͨ͠
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظͷબͱूத ɹɾAPIઃܭͷ୯७Խ ɹɾPros ɹɾը໘ʹͬͨΓͦͬͨAPIආ͚ΒΕͨ ɹɾઃܭɾָ࣮͕Ͱόάগͳ͔ͬͨ ɹɾCons ɹɾΫϥΠΞϯταΠυͷ࣮ʹෛՙ͕Αͬͨ ɹ => ͜ͷ͋ͱͷ ”՝” ʹͮͮ͘
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։ൃॳظͰͷબͱूதͱ՝ ■ ্ཱͪ͛ظ ~ ։ൃॳظͷબͱूதͷ݁Ռͬͨ՝ ɹɾΫϥΠΞϯταΠυͷϦΫΤετɾϋϯυϦϯά͕ෳࡶԽ͢Δ 6ฒྻ ྻ ྻ ※͋Δৄࡉը໘ͷ࣮Πϝʔδ
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ΞʔΩςΫνϟ্ͷղܾ༨ͷ͍ͬͯ͜Δ ͦ͏ɺBFFͳΒͶ!!!
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։ൃॳظͰͷબͱूதͱ՝ ■ BFF(Backend For Frontend) ɹɾݩSound CloudͷPhil Calçado͕ఏএ ɹɾΫϥΠΞϯτͷछผຖʹதؒϨΠϠΛ࡞Δ “Pattern: Backends For Frontends” Sam Newman http://samnewman.io/patterns/architectural/bff/
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■ BFFಋೖޙͷΞʔΩςΫνϟ ɹɾ2017தʹ͜Μͳײ͡ʹͳΔ??? ։ൃॳظͰͷબͱूதͱ՝
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։ൃॳظͰͷબͱूதͱ՝ ■ ݁ہ։ൃॳظͰԿΛબͯ͠ɺࠓޙʹԿΛͨ͠ͷ͔? ɹɾ։ൃॳظ ɹɾ্ཱͪ͛ظʹ ”ΦʔέετϨʔγϣϯΛ࡞Δ͔?” ͳͲͷग़͍ͯͨ ɹɾ͕ɺܾΊ͖Εͳ͔ͬͨ & ࣮͢Δ༨ྗ͕ͳ͔ͬͨ ɹɾࠓޙͷΞʔΩςΫνϟɾ։ൃʹͲΜͳҙຯ͕͋ͬͨͷ͔??? ɹɾޙ͔Βߟ͑ΒΕΔ༨Λ͔ͨͬͨ͠ ɹɾϨΠϠʔΛ1ຕ͢ߟ͑ํ͜͏͍͏߹ʹ߹͕ྑ͍ ɹɾAPI GatewayɾBFFAPIʹؔͯ͠ͷ “ϨΠϠʔΛ͢” ΞʔΩςΫνϟ ɹɾͦͷͨΊʹόοΫΤϯυͱϑϩϯτΤϯυ͕ີ݁߹͍ͯ͠Δͷ߹͕ѱ͍
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ཁ͢Δʹ APIؔ࿈ͷΞʔΩςΫνϟܾఆΛϖϯσΟϯάͨ͠(Ͱ͖ͨ)
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3. BFFͷϓϩτλΠϓ࣮
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#''ͷϓϩτλΠϓ࣮ ■ BFFʹٻΊΒΕΔཁ݅ (Why) ɹɾΫϥΠΞϯτ͔Βݟͯ ɹɾը໘දࣔʹඞཁͳσʔλΛ·ͱΊͯऔಘ͍ͨ͠ ɹɾͰɺϨεϙϯε͕͘ͳΔͷNG ɹɾઃܭɾΞʔΩςΫνϟͷ؍͔Β ɹɾήʔτΣΠͱͯ͠όοΫΤϯυͷલʹஔ͔ΕΔ ɹɾ͍ͱશମͷϨεϙϯεѱԽΛট͘ ɹɾεέʔϥϏϦςΟ͕ཁٻ͞ΕΔ ɹɾϑϩϯτΤϯυͱີ݁߹͢ΔͷͰߋ৽සߴ͘ͳΔ ɹɾϑϩϯτΤϯυΛ৮ΔΤϯδχΞ͕ؾܰʹมߋͰ͖Δඞཁ͕͋Δ ɹɾϚΠΫϩαʔϏε๊͕͑ΔࢄγεςϜͷ͠͞વ͋Δ ɹɾࢄτϨʔεஅɾम෮ͷγεςϜԽߟ͍͑ͯ͘ඞཁੑ
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷઃܭ (WhatɾHow) ɹɾWhat ɹɾཁAPIΫϥΠΞϯτΛ࡞Δ ɹɾHow ɹɾݴޠɾϑϨʔϜϫʔΫͷબఆ ɹɾεέʔϥϏϦςΟɾʹؔͯ͠༏Ґੑ͕͋Δ͜ͱ ɹɾϑϩϯτΤϯυΛ৮ΔΤϯδχΞֶश͕༻ҙͰ͋Δ͜ͱ ɹɾࣗͨͪͷνʔϜͩͱબࢶ Go or Elixir͔…
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [1: ༷ͱERਤ] ɹɾ͜Μͳ༷Λఆͯ͠ΈΔ ɹɾҰཡʹͱʹ͍ͭͨίϝϯτΛදࣔ͢Δ ɹɾʹΧςΰϦ͕ઃఆ͞Ε͍ͯΔ ɹɾձһઐ༻αʔϏεͳͷͰϩάΠϯࡁΈϢʔβͷΈӾཡՄೳ ɹɾAPIͷશͯͷΤϯυϙΠϯτʹϢʔβೝূ͕͋ΔɺೝূJWTͰߦ͏
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [2: ߏਤ] ɹɾBEFORE ɹɾAFTER WebΫϥΠΞϯτ ೝূ(JWT) API(itemɾcategoryɾcomment) WebΫϥΠΞϯτ ೝূ(JWT) API(itemɾcategoryɾcomment) BFF labstack/echoͰαʔό࡞
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [3: BEFORE] ※Web Client(JS)ͷίʔυ ϝΠϯͷऔಘॲཧ - itemͱcategory - comment itemͱcategoryऔಘॲཧ ฒྻͰऔಘ commentऔಘॲཧ itemͷcountΛฒྻͰऔಘ
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [3: BEFORE] ※Web Client(JS)ͷίʔυ APIΫϥΠΞϯτͷऔಘ ϔομʹJWTτʔΫϯ͕ೖΔ JWTτʔΫϯͷऔಘ /user_token ͷPOST
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [4: AFTER] ※ BFF(Go)ͷίʔυ labstack/echo ͰαʔόΛཱ͍ͯͯΔ ϝΠϯͷऔಘॲཧ - JWTͷτʔΫϯऔಘ - itemͱcategory - comment
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [4: AFTER] ※ BFF(Go)ͷίʔυ JWTτʔΫϯͷऔಘ /user_token ͷPOST GETϦΫΤετͷϥο ύʔ JWTτʔΫϯΛϔομʔ ʹηοτ͍ͯ͠Δ
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [4: AFTER] ※ BFF(Go)ͷίʔυ ItemͷAPIϦΫΤετ෦ Ϩεϙϯεͱಉ͡StructΛ࡞͍ͬͯΔ
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [4: AFTER] ※ BFF(Go)ͷίʔυ ࠷ऴతʹϨεϙϯεΛฦ͢෦ ϨεϙϯεͷܗͷStructΛtoJSON͢Δ
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [4: AFTER] ※Web Client(JS)ͷίʔυ BFFͷΤϯυϙΠϯτΛίʔϧ API1ຊ͚ͩ!!!
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#''ͷϓϩτλΠϓ࣮ ■ BFFͷϓϩτλΠϓ࣮ [5: Ͳ͏͔?] ɹɾϑϩϯτΤϯυ͔ΒBFFʹAPIϦΫΤετͷϋϯυϦϯά͕Ҡͬͨ ɹɾϑϩϯτΤϯυ͔ΒݟΔͱը໘ʹରԠ͢ΔAPIΛ1ຊ͛Δ͚ͩͰྑ͍ ɹɾBFFͷ࣮୯७͚ͩͲͪΐͬͱࡶ ɹɾνʔϜͷϝϯόʔʹ”ΊΜͲ͍͘͞”ͱݴΘΕͦ͏… ɹɾϚοϐϯά෦generatorΛ༻ҙ͢ΔͳΓɺඞཁͦ͏
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#''ͷϓϩτλΠϓ࣮ ■ ࠓճͷαϯϓϧίʔυ ɹɾWebΫϥΠΞϯτ: shimpeiws/simple-web-client ɹɾBFF(Go): shimpeiws/simple-go-api ɹɾRails API: shimpeiws/simple-rails-api
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·ͱΊ ■ ·ͱΊ ɹɾ։ൃͷ͜Ε·Ͱ ɹɾ։ൃεϐʔυΛ্͛ͯॳظ։ൃΛΓ͖ͬͯͨ ɹɾΞʔΩςΫνϟ͕ܾΊ͖ΕͣɺAPIؔ࿈ͷઃܭΛ୯७Խ͢͠Δ͜ͱʹͨ͠ ɹɾ݁ՌɺϑϩϯτΤϯυʹॏ͕͞دͬͨ ɹɾ։ൃͷ͜Ε͔Β ɹɾBFFΛಋೖ͍͖͍ͯͨ͠ ɹɾϑϩϯτΤϯυͷϋϯυϦϯάෳࡶԽͷճආ ɹɾϚΠΫϩαʔϏεԽ͔ΒϑϩϯτΤϯυΛकΔ ɹɾޙ͔Βߟ͑Δ༨ͷ͋ΔΞʔΩςΫνϟɾઃܭɺେࣄ
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