In-Memory Realms を使って API キャッシュした話 / Use In-Memory Realms

Transcript

1. In-Memory Realms ࢖ͬͯ API Ωϟογϡͨ͠࿩ ΈͯͶͷMeetup #1 2018-06-27 satoru.sasaki

2. ࣗݾ঺հ —ࠤʑ໦ ڿ (@caad1229) —2015೥10݄ೖࣾ —ࡢ೥ SNSϛΫγΟ -> ΈͯͶ ʹҠಈ

   —झຯ͸ϨίʔυͰ Jazz ௌ͘͜ͱ

3. ΈͯͶΞϓϦͱrealm —ΈͯͶͰ͸ϢʔβͷϝσΟΞ৘ ใΛ realm ͰΩϟογϡ͍ͯ͠ Δ —ࠩ෼ಉظͱશମಉظͰ realm ʹ ಉظ

   —ىಈ࣌ɾ௨஌ड৴ɾΞοϓϩ ʔυ࣌

4. ΈͯͶΞϓϦͱ Architecutre —Android ͷ৽نػೳ͸ MVVM Ͱ࣮૷ —iOS ͱઃܭΛἧ͑ΔͨΊʹ CleanArchitecture Λ࢖͍ͬͯ

   Δͱ͜Ζ΋͋Δ

5. API ΩϟογϡΛ࢖͏ܦҢ —Ϣʔβͷ໨ʹ৮ΕΔػձ͕ଟ͍͕ɺߋ৽͕සൟͰͳ͍ —ը໘͕දࣔ͢Δͨͼʹ fetch ͢Δඞཁ͕ͳ͍ —Push ͳͲͰ࠷৽Λऔಘ͢Ε͹͍͍ఔ౓

6. In-memory Realm ʹ͍ͭͯ —σʔλ͸ϝϞϦॻ͔ΕΔ —Realm ΠϯελϯεͷࢀরΧ΢ϯλ͕ 0 ʹͳΔͱσ ʔλ͕ফ͑Δ —ΞϓϦىಈதͰσʔλΛอ͍࣋ͨ͠৔߹͸

   Application ΫϥεͰ Realm ΠϯελϯεΛอ࣋

7. In-memory Realm ͷಋೖ —Application Ͱ realm ΠϯελϯεΛอ࣋ open class CustomApplication

   : Application() { private var realm: Realm? = null : }

8. In-memory Realm ͷಋೖ —onCreate Ͱੜ੒ͱอ࣋ override fun onCreate() { super.onCreate()

   val config = RealmConfiguration.Builder() .name("in-memory.realm") .inMemory() .build() // อ࣋͢Δ realm = Realm.getInstance(config) }

9. In-memory Realm ͷಋೖ —onTerminate Ͱഁغ override fun onTerminate() { realmInMemory?.close()

   super.onTerminate() }

10. cache ػߏͷͨΊͷઃܭ —MVVM ࢖͏

11. Data ͷѻ͍ —Mapper Λ࢖ͬͯڞ௨ Object ʹ ͢Δ —Mapper ʹม׵͢Δ interface

    Mapper<E, D> { fun mapFromEntity(type: E): D fun mapToEntity(type: D): E }

12. Cache ͷσʔλ —RealmObject —ϦϨʔγϣϯ͕؆୯ʹͰ͖Δ RealmList<T> Λ࢖͏

13. Repository —Local ͱ Remote Λ࢖͏ —cache ͷอଘͱऔಘϩδοΫ —Local ͔Βऔಘͯ͠ɺͳ͚Ε ͹

    Remote ͔Β fetch ͢Δ —ڧ੍తʹ Remote ͔Βऔಘ΋ Ͱ͖ΔΑ͏ʹ͢Δ

14. Repository

15. Demonstration

16. Demonstration Qiita هࣄҰཡΛऔಘ͢ΔΞϓϦ https://github.com/caad1229/apicache dagger2 okHttp3 retrofit2 rxJava2 realm Glide

17. ՝୊ͱ͔ —expire ͷλΠϛϯά —ΩϟογϡΫϦΞͷλΠϛϯά —ϖʔδϯάɾϢʔβૢ࡞ʹΑΔςʔϒϧͷߋ৽

18. ͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠