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APIのデータのマッピングを 約18倍速くした話
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magiepooh
February 22, 2018
Technology
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APIのデータのマッピングを 約18倍速くした話
magiepooh
February 22, 2018
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Transcript
APIͷσʔλͷϚοϐϯάΛ 18ഒͨ͘͠ potatotips #48 @magie_pooh
ࣗݾհ ౻ాୖຏ @magie_pooh @magiepooh झຯɾಛٕ: ΫϥϑτϏʔϧɾຊञɾϚδοΫɾ࠵
ͱ͋ΔΞϓϦͷ։ൃத • ը໘ભҠ͕͍͕͋Δͳʔͱࢥͬͨ
ͱ͋ΔΞϓϦͷ։ൃத • ը໘ભҠ͕͍͕͋Δͳʔͱࢥͬͨ • Nexus5Xͱ͔Ͱඵ
ͱ͋ΔΞϓϦͷ։ൃத • ը໘ભҠ͕͍͕͋Δͳʔͱࢥͬͨ • Nexus5Xͱ͔Ͱඵ • SO-04G (5.0.2)Ͱը໘ભҠʹ20sec͘Β͍ɾɾ
None
ঢ়گ • Wi-Fiଓڥ • σʔλJSONܗࣜ • αΠζ1MB • Kotlin +
Moshi(=A modern JSON library for Android and Java)
ରࡦ
ରࡦ1ɿMoshi͕ѱ͍ͷͰʁ • moshi(moshi-kotlin: SquareJSONύʔα)ϦϑϨΫγϣϯ Λ༻͍͍ͯΔͨΊɺίετ͕ߴ͍ • KotshiΛ͏ • An annotations
processor that generates Moshi adapters from immutable Kotlin data classes. • https://github.com/ansman/kotshi
ରࡦ1ɿMoshi͕ѱ͍ͷͰʁ • moshi(moshi-kotlin: SquareJSONύʔα)ϦϑϨΫγϣϯ Λ༻͍͍ͯΔͨΊɺίετ͕ߴ͍ • KotshiΛ͏ • An annotations
processor that generates Moshi adapters from immutable Kotlin data classes. • https://github.com/ansman/kotshi => 20sec -> 12sec
ରࡦ2ɿΦϒδΣΫτੜ͕ଟ͗͢Δ • ྻͷதʹΦϒδΣΫτ͕େྔʹଘࡏ͍ͯͨ͠ { “hogeArray”: [ {“obj”: {123, 456.2}},… ]
}
ରࡦ2ɿΦϒδΣΫτੜ͕ଟ͗͢Δ • ྻͷதʹΦϒδΣΫτ͕େྔʹଘࡏ͍ͯͨ͠ => ΦϒδΣΫτ͡Όͳ͘ɺStringܕͷྻͷྻͰදݱ͢Δ { “hogeArray”: [ {“obj”: {123,
456.2}},… ] } { “hogeArray”: [ [“123”, “456.2”],… ] }
ରࡦ2ɿΦϒδΣΫτੜ͕ଟ͗͢Δ • ྻͷதʹΦϒδΣΫτ͕େྔʹଘࡏ͍ͯͨ͠ => ΦϒδΣΫτ͡Όͳ͘ɺStringܕͷྻͷྻͰදݱ͢Δ { “hogeArray”: [ {“obj”: {123,
456.2}},… ] } { “hogeArray”: [ [“123”, “456.2”],… ] } => 12sec -> 8.4secʢྻσʔλ͕ͦͦڊ େͩͬͨͨΊɺ͔ͳΓ͕ࠩग़ͨʣ
ରࡦ3: APIఆٛΛݟ͢ • ྻσʔλΛ̍ͭʹڞ௨ԽͰ͖Δɾɾɾʂ • ॏෳͨ͠ྻσʔλΛ4ͭड͚औ͍ͬͯͨ => 8.4sec -> 2.9sec
·ͱΊ1 • ΄΅Kotshiͷ͓͔͕͛ͩɺ20sec -> 2.9secʹͳͬͨ • େྔͷྻσʔλʹܕΛ͚ͭΔͷΑ͘ͳ͍ • ʮͦͷɺਓྨࢥ͍ग़ͨ͠ɻؒͷύϑΥʔϚϯεࠩҟ ͷڪාΛɻͦΕͰαϙʔτ͠ͳ͚Ε͍͚ͳ͍۶ৱΛɻʯ
• SO-04G (5.0.2): 2.9sec • SO-02G (4.4.4): 0.64sec
·ͱΊ2 • iOSͰͦ͜·Ͱύʔεʹ͕͔͔࣌ؒͬͯͳ͔ͬͨͷ͕ٙ • ͔ͯ͠͠ݹ͍ͩͱ͕͔͔࣌ؒΔʁ • ը໘ભҠΞχϝʔγϣϯ(Shared Element Transition)͕͋Δͱɺ 2.9secͰ͘ײ͡ͳ͍
• ͦΕͰɺ2.9sec͔͔Δͷ͕ݏͩͬͨͷͰɺେྔͷྻͷऔಘ ผAPIʹΓग़ͨ͠ɻʢͦΕͰ1.2sec͘Β͍·ͰॖΊͯ18ഒͷύ ϑΥʔϚϯεվળୡɾɾʣ