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In-Memory Realms を使って API キャッシュした話 / Use In-Mem...
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satoru.sasaki
June 29, 2018
Programming
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In-Memory Realms を使って API キャッシュした話 / Use In-Memory Realms
satoru.sasaki
June 29, 2018
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Transcript
In-Memory Realms ͬͯ API Ωϟογϡͨ͠ ΈͯͶͷMeetup #1 2018-06-27 satoru.sasaki
ࣗݾհ —ࠤʑ ڿ (@caad1229) —201510݄ೖࣾ —ࡢ SNSϛΫγΟ -> ΈͯͶ ʹҠಈ
—झຯϨίʔυͰ Jazz ௌ͘͜ͱ
ΈͯͶΞϓϦͱrealm —ΈͯͶͰϢʔβͷϝσΟΞ ใΛ realm ͰΩϟογϡ͍ͯ͠ Δ —ࠩಉظͱશମಉظͰ realm ʹ ಉظ
—ىಈ࣌ɾ௨ड৴ɾΞοϓϩ ʔυ࣌
ΈͯͶΞϓϦͱ Architecutre —Android ͷ৽نػೳ MVVM Ͱ࣮ —iOS ͱઃܭΛἧ͑ΔͨΊʹ CleanArchitecture Λ͍ͬͯ
Δͱ͜Ζ͋Δ
API ΩϟογϡΛ͏ܦҢ —Ϣʔβͷʹ৮ΕΔػձ͕ଟ͍͕ɺߋ৽͕සൟͰͳ͍ —ը໘͕දࣔ͢Δͨͼʹ fetch ͢Δඞཁ͕ͳ͍ —Push ͳͲͰ࠷৽Λऔಘ͢Ε͍͍ఔ
In-memory Realm ʹ͍ͭͯ —σʔλϝϞϦॻ͔ΕΔ —Realm ΠϯελϯεͷࢀরΧϯλ͕ 0 ʹͳΔͱσ ʔλ͕ফ͑Δ —ΞϓϦىಈதͰσʔλΛอ͍࣋ͨ͠߹
Application ΫϥεͰ Realm ΠϯελϯεΛอ࣋
In-memory Realm ͷಋೖ —Application Ͱ realm ΠϯελϯεΛอ࣋ open class CustomApplication
: Application() { private var realm: Realm? = null : }
In-memory Realm ͷಋೖ —onCreate Ͱੜͱอ࣋ override fun onCreate() { super.onCreate()
val config = RealmConfiguration.Builder() .name("in-memory.realm") .inMemory() .build() // อ࣋͢Δ realm = Realm.getInstance(config) }
In-memory Realm ͷಋೖ —onTerminate Ͱഁغ override fun onTerminate() { realmInMemory?.close()
super.onTerminate() }
cache ػߏͷͨΊͷઃܭ —MVVM ͏
Data ͷѻ͍ —Mapper Λͬͯڞ௨ Object ʹ ͢Δ —Mapper ʹม͢Δ interface
Mapper<E, D> { fun mapFromEntity(type: E): D fun mapToEntity(type: D): E }
Cache ͷσʔλ —RealmObject —ϦϨʔγϣϯ͕؆୯ʹͰ͖Δ RealmList<T> Λ͏
Repository —Local ͱ Remote Λ͏ —cache ͷอଘͱऔಘϩδοΫ —Local ͔Βऔಘͯ͠ɺͳ͚Ε
Remote ͔Β fetch ͢Δ —ڧ੍తʹ Remote ͔Βऔಘ Ͱ͖ΔΑ͏ʹ͢Δ
Repository
Demonstration
Demonstration Qiita هࣄҰཡΛऔಘ͢ΔΞϓϦ https://github.com/caad1229/apicache dagger2 okHttp3 retrofit2 rxJava2 realm Glide
՝ͱ͔ —expire ͷλΠϛϯά —ΩϟογϡΫϦΞͷλΠϛϯά —ϖʔδϯάɾϢʔβૢ࡞ʹΑΔςʔϒϧͷߋ৽
͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠