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はてなブログ タグの技術選択 / The technical details of Haten...
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aereal
June 26, 2019
Programming
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はてなブログ タグの技術選択 / The technical details of Hatena Blog Tag
@ Hatena Engineer Seminar #12
aereal
June 26, 2019
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Transcript
ͯͳϒϩά λά ͷٕज़બ Hatena Engineer Seminar #12 id:aereal
• id:aereal • GitHub: @aereal • ϒϩά౷߹νʔϜ ςοΫϦʔυ • https://this.aereal.org/
https://this.aereal.org/
https://this.aereal.org/
ϒϩάαʔϏεͷ HTTPSԽΛࢧ͑ͨ AWSͰ࡞ΔϐλΰϥεΠον https://speakerdeck.com/aereal/the-construction-of- large-scale-tls-certificates-management-system-with-aws
speakerdeck.com/papix/hatena-engineer-seminar-number-10?slide=52
͢͜ͱ • ͯͳϒϩά λάͷ։ൃʹ͍ͭͯ • ͯͳϒϩά λάͷߏ • ֤ʑͷٕज़બʹ͍ͭͯ
͞ͳ͍͜ͱ • σʔλҠߦ • ͜Ε͚ͩͰ͍Ζ͍ΖͤΔͷͰػձ͕͋Ε • ϓϩδΣΫτཧ • Πϯϑϥߏཧ •
Service Mesh • ֎෦APIݺͼग़͕͠ଟ͍ͷͰݕ౼ͨ͠ • ϦϦʔεલͷݕূஈ֊ͳͷͰࣽ٧·ͬͨΒ͓͠͠·͢
։ൃʹ͍ͭͯ • αʔϏεͷಛ • ։ൃମ੍ • ͜Ε·Ͱͷ։ൃͷৼΓฦΓ
ͯͳϒϩά λάͷಛ • Ϣʔβ͕ίϯςϯπΛฤू͢ Δ • ༧ଌ͕͍͠ΞΫηεͷมಈ • ݕࡧΤϯδϯʹΠϯσοΫε ͯ͠Β͍͍ͨ
• దͳΩϟογϡઓུ • ߴ͍εέʔϥϏϦςΟ • αʔόαΠυͰstaticʹHTML Λฦ͢ඞཁ͕͋Δ
։ൃମ੍ • ΤϯδχΞɾσβΠφʔɾσΟϨΫλʔʹΑΔ খنͳνʔϜ • ΈΜͳԿ͔͠ΒSM, POͳͲͷϩʔϧΛෳ͍࣋ͬͯΔ • σβΠφʔίʔσΟϯά͢Δ
࿀ʹࣄʹେ͠ • (ΤϯδχΞʹݶΒͣ) Δ͜ͱ͕ଟ͍! • ਓ͕ؒΔ͜ͱΛݮΒ͍ͨ͠ • ࣗಈԽɺίʔυੜɺ͍ͷʹר͔ΕΔ, etc. •
ਓ͕গͳ͚ΕίϛϡχέʔγϣϯίετԼ͕Δ • →νϟϨϯδϯάͳ͜ͱΛ͢Δྑ͍ػձ • →·ͣաڈΛৼΓฦΖ͏
ͯͳϒϩάͷ։ൃΛৼΓฦͬͯ ࣍ʹ׆͔ͤΔ͜ͱͳ͍͔
ͯͳϒϩάͰͷࠔΓ͝ͱ • ϓϨθϯςʔγϣϯͷࢄ • ΫϥΠΞϯταΠυͱαʔόαΠυͷAPIϓϩτίϧ
ϓϨθϯςʔγϣϯͷࢄ • αʔόαΠυͷςϯϓϨʔτ • ΫϥΠΞϯταΠυ • DOMΛ৮Δ • React
ϓϨθϯςʔγϣϯͷࢄ • Des.ʮ͜͜ͷςΩετΛήετͷ͚࣌ͩม͍͑ͨͰ͢ʯ • Eng.ʮαʔόαΠυͰ͍ͬͯΔͷͰม͓͖͑ͯ·͢Ͷʯ • Des.ʮ͜ͷmarginม͍͑ͨͷͰΫϥεΛ͚͍ͨͰ͢ʯ • Eng.ʮ͜͜jQueryͰ͍ͬͯΔͷͰ͓͖ͬͯ·͢Ͷʯ •
Des.ʮ͜͜ͷςΩετͲ͏ͬͯग़͍ͯ͠ΔΜͰ͔͢?ʯ • Eng.ʮReactͰ͍ͬͯͯɺJSͷίʔυ͕͜͜ʹ͋Γ·͢ʯ
ϓϨθϯςʔγϣϯͷࢄ • Des.ʮ͜͜ͷςΩετΛήετͷ͚࣌ͩม͍͑ͨͰ͢ʯ • Eng.ʮαʔόαΠυͰ͍ͬͯΔͷͰม͓͖͑ͯ·͢Ͷʯ • Des.ʮ͜ͷmarginม͍͑ͨͷͰΫϥεΛ͚͍ͨͰ͢ʯ • Eng.ʮ͜͜jQueryͰ͍ͬͯΔͷͰ͓͖ͬͯ·͢Ͷʯ •
Des.ʮ͜͜ͷςΩετͲ͏ͬͯग़͍ͯ͠ΔΜͰ͔͢?ʯ • Eng.ʮReactͰ͍ͬͯͯɺJSͷίʔυ͕͜͜ʹ͋Γ·͢ʯ
ϓϨθϯςʔγϣϯͷ౷Ұ • ΫϥΠΞϯταΠυαʔόαΠυReactʹ • ϨΠϠू • SSR (= Server-side Rendering)
͍ͨ͠ (ޙड़) ͷͰ߹
API • αʔόαΠυͱΫϥΠΞϯταΠυΛAPIͰܨ͙ΞʔΩς Ϋνϟྲྀߦ͍ͬͯΔ • ͍ΖΜͳπʔϧ͕ग़ճ͍ͬͯΔ • gRPC, GraphQL, Swagger,
etc. • ͍ͷʹר͔ΕΑ͏ → GraphQL (ޙड़)
Server-side Rendering • ݕࡧΤϯδϯΫϩʔϥͳͲʹΠϯσοΫεͯ͠΄͍͠ • ݴ༿ڵຯΛ࣋ͬͨਓΛͯͳϒϩάɾͯͳϒοΫ ϚʔΫΛհͯ͠ܨ͍͛ͨͱ͍͏ϛογϣϯ • ύϑΥʔϚϯεͷد༩ •
scriptingΛڬ·ͳ͍ͷ͕ͳΜ͔ͩΜ͍ͩ • ΠϯλϥΫςΟϒͳཁૉ͕গͳ͍ͱ͍͏ࣄ͋Δ
Q. ·ͩSSR͍Δ? • Q. Googlebot͕༻͢ΔChromium͕࠷৽ʹͳ͚ͬͨͲ? • The new evergreen Googlebot
• A. Googlebot͚ͩߟ͑ΔͳΒඞਢͰͳ͘ͳͬͨ • A. ͔͠͠ଞʹΫϩʔϥ͍Δ • Twitter, Facebook, Bing, etc.
͜͜·Ͱͷ·ͱΊ
ͯͳϒϩά λάͷಛ • Ϣʔβ͕ίϯςϯπΛฤू͢ Δ • ༧ଌ͕͍͠ΞΫηεͷมಈ • ݕࡧΤϯδϯʹΠϯσοΫε ͯ͠Β͍͍ͨ
• దͳΩϟογϡઓུ • ߴ͍εέʔϥϏϦςΟ • αʔόαΠυͰstaticʹHTML Λฦ͢ඞཁ͕͋Δ ࠶ ܝ
·ͱΊ • ϓϨθϯςʔγϣϯReactʹू • αʔόͱΫϥΠΞϯτAPIͰ݁߹͢Δ • ͦͷͨΊͷΤίγεςϜʹ;ΜͩΜʹ͔ͬΔ • SSR͢Δ
ͯͳϒϩά λάͷ ߏ
front GraphQL API ϒϥβ DB ॳճGET SSRͷͨΊʹ σʔλΛfetch CSRҎ߱ fetch
ͯͳϒϩά ͯͳϒοΫϚʔΫ
ߏ • frontGraphQL API͔ΒσʔλΛऔ͖ͬͯͯSSR͢Δ • ϒϥβfrontΞΫηε͠HTMLΛฦͯ͠Β͏ • Πϯϑϥͯ͢AWS • ALB,
ECS, RDS (Aurora)
GraphQL • ΫϥΠΞϯτɾαʔόڞʹΤίγεςϜ͕ॆ࣮͍ͯ͠Δ • TypeScript, Goͷίʔυੜ • (։ൃணख࣌grpc-webunstableͩͬͨ) • ͯͳϒϩά
λάͰαʔόαΠυΛGo w/gqlgenͰ࣮ • ΫϥΠΞϯτϥΠϒϥϦApolloΛ࠾༻
gqlgen • gqlgenSchema͔ΒresolverͷܗΛੜͯ͘͠ΕΔ • ಉ͡Α͏ͳίʔυΛίϐϖ͢Δࠈ͕ͳ͍ • interface{} ͕΄ͱΜͲग़ͯ͜ͳ͍type-safe͞ • refs.
MTC2018 ΧϯϑΝϨϯεLPͷཪ ʙGraphQLฤʙ
Apollo • apollographql.com • ϥΠϒϥϦͱSaaS͔ΒͳΔ • ͯͳϒϩά λάͰapollo-client, react-apollo, apollo-
toolingΛར༻
apollo-tooling • apollo client:codegenͰεΩʔϚͱquery/fragment ΛύʔεɺTypeScriptͷܕఆٛΛੜ͢Δ • ͪ͜Βany͕΄ͱΜͲग़ͯ͜ͳ͍type-safe͞ͳͷͰ҆৺ ײ͕͋Δ • APIʹ͓͚Δtype-safeͷ҆৺ײΫϥΠΞϯτɾαʔό
྆ํ͕ݎ࿚Ͱͳ͍ͱ࣮ݱ͞Εͳ͍ͷͰଚ͍
apollo-client • apollo-clientFetch APIΛGraphQL͚ʹྑ͍ײ͡ʹแΜ Ͱ͘ΕΔ • linkͱ͍͏ϛυϧΣΞΛΈ߹Θͤͯɺೝূϔομͷ ՃΤϥʔϋϯυϦϯάΛϓϥΨϒϧʹ࡞ΕΔ www.apollographql.com/docs/link/overview/
react-apollo • query/mutationΛൃߦͨ݁͠ՌΛ͢Higher-order Component • TypeScriptͩͱܕมΛͯ͠anyΛճආͰ͖Δ • queryͱvariablesͷܕΛࢦఆͰ͖Δ
const ALL_PEOPLE_QUERY = gql` query All_People_Query { allPeople { people
{ id name } } } `; interface Data { allPeople: { people: Array<{ id: string; name: string }>; }; }; interface Variables { first: number; }; const AllPeopleComponent = <Query<Data, Variables> query={ALL_PEOPLE_QUERY}> {({ loading, error, data }) => { ... }} </Query> www.apollographql.com/docs/react/recipes/static-typing/
GraphQLͷԸܙ ΤϯδχΞ σβΠφʔ ϞοΫresolverΛ࣮ ίʔσΟϯά։࢝ resolverຊ࣮
GraphQLͷԸܙ • GraphQLͱApolloͷ͓͔͛Ͱѹతʹলྗ • ͜Ε·Ͱͱҧ͏͜ͱ: நʹґଘͰ͖Δ • ґଘੑٯసͷݪଇ dependency inversion
principle • ܕݕ͕ࠪແ͍߹: ۩ (ͷܕ) ͰΓͱΓ͢Δ = յΕ ͍͢ • ۩ͷܕ is ಈ͍͍ͯΔίʔυͷฦΓ
SSR • ReactͰSSR͢ΔͳΒNext.js͕༗ྗͰͳ͍͔ • ͦͦNext.jsͱԿͳͷ͔ • ΫϥΠΞϯτͱαʔόؒͰͳΔ͘ίʔυΛڞ௨ԽͰ ͖ΔΑ͏ͳworkaroundू • ศརWebpackઃఆू
• ศརExpressϛυϧΣΞू
͠λΠϜϚγϯ͕͋Ε • Google App Engine/SEFirebaseΛબΜ͔ͩ͠Εͳ͍ • ϑϧϚωʔδυαʔϏεͷॆ࣮GCPͷํ͕ߴ͍ͱࢥ͏
·ͱΊ
·ͱΊ • GraphQLͷ͓͔͛ͰগਓͰૉૣ͘։ൃͰ͖͍ͯΔ • ϨόϨοδ͕ޮ͘ • ϦϦʔεΛ͓ͨͷ͠Έʹ!