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📱 How to: оптимизировать работу с API в мобильных приложениях

Проблема: Долгая загрузка данных, лишние запросы и падение приложения при плохом интернете.

1️⃣ Кеширование данных

Используйте Room (Android) или CoreData (iOS) для локального хранения:

// Android + Kotlin  
@Dao
interface UserDao {
@Query("SELECT * FROM users")
fun getUsers(): Flow<List<User>>
@Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun saveUsers(users: List<User>)
}

// iOS + Swift  
func saveUsers(_ users: [User]) {
let context = persistentContainer.viewContext
users.forEach { user in
let entity = UserEntity(context: context)
entity.id = user.id
entity.name = user.name
}
try? context.save()
}


2️⃣ Пагинация

Делите данные на страницы:

🔵 Android: Paging 3 + RemoteMediator
🔵 iOS: UICollectionViewDiffableDataSource + async/await

3️⃣ Повтор запросов при ошибках

// iOS  
func fetchWithRetry(maxAttempts: Int = 3) async throws -> Data {
for attempt in 1...maxAttempts {
do {
return try await fetchData()
} catch {
if attempt == maxAttempts { throw error }
try await Task.sleep(nanoseconds: 1_000_000_000 * UInt64(attempt))
}
}
fatalError("Unreachable")
}


4️⃣ Оптимизация JSON

🔵 Используйте kotlinx.serialization (Android) и Codable (iOS)
🔵 Исключайте ненужные поля через @Transient / @Ignore

5️⃣ HTTP-кеширование

// Android + OkHttp  
val client = OkHttpClient.Builder()
.cache(Cache(cacheDir, 10 * 1024 * 1024)) // 10 MB
.build()


💬 Как вы оптимизируете работу в своих проектах? Делитесь опытом

🐸 Библиотека мобильного разработчика

#буст
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📱 How to: оптимизировать работу с API в мобильных приложениях

Проблема: Долгая загрузка данных, лишние запросы и падение приложения при плохом интернете.

1️⃣ Кеширование данных

Используйте Room (Android) или CoreData (iOS) для локального хранения:

// Android + Kotlin  
@Dao
interface UserDao {
@Query("SELECT * FROM users")
fun getUsers(): Flow<List<User>>
@Insert(onConflict = OnConflictStrategy.REPLACE)
suspend fun saveUsers(users: List<User>)
}

// iOS + Swift  
func saveUsers(_ users: [User]) {
let context = persistentContainer.viewContext
users.forEach { user in
let entity = UserEntity(context: context)
entity.id = user.id
entity.name = user.name
}
try? context.save()
}


2️⃣ Пагинация

Делите данные на страницы:

🔵 Android: Paging 3 + RemoteMediator
🔵 iOS: UICollectionViewDiffableDataSource + async/await

3️⃣ Повтор запросов при ошибках

// iOS  
func fetchWithRetry(maxAttempts: Int = 3) async throws -> Data {
for attempt in 1...maxAttempts {
do {
return try await fetchData()
} catch {
if attempt == maxAttempts { throw error }
try await Task.sleep(nanoseconds: 1_000_000_000 * UInt64(attempt))
}
}
fatalError("Unreachable")
}


4️⃣ Оптимизация JSON

🔵 Используйте kotlinx.serialization (Android) и Codable (iOS)
🔵 Исключайте ненужные поля через @Transient / @Ignore

5️⃣ HTTP-кеширование

// Android + OkHttp  
val client = OkHttpClient.Builder()
.cache(Cache(cacheDir, 10 * 1024 * 1024)) // 10 MB
.build()


💬 Как вы оптимизируете работу в своих проектах? Делитесь опытом

🐸 Библиотека мобильного разработчика

#буст

BY Библиотека мобильного разработчика | Android, iOS, Swift, Retrofit, Moshi, Chuck




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