Skip to content

KacheController

A pluggable read-through / write-through cache layer for database operations. Swap any cache backend with any database adapter — no boilerplate.

val cache = RedisCacheClient("redis://localhost:6379")
val controller = MongoKacheController(cache = cache)

// read-through: fetches from cache, falls back to MongoDB on miss
val user = controller.get(id, usersCollection, User.serializer()) {
    find(Filters.eq("_id", id)).firstOrNull()
}

val cache = InMemoryCacheClient()
val controller = ExposedKacheController(cache = cache)

// write-through: persists to DB, then updates cache
val saved = controller.set(UsersTable, User.serializer()) {
    insertAndReturn(user)
}

@Serializable
data class User(
    override val id: String = ObjectId().toHexString(),
    val firstName: String,
    val lastName: String,
) : Model

Cache backends — Redis, in-memory, or SQLite. Bring your own by implementing CacheClient.

Database adapters — MongoDB and any Exposed-compatible database (PostgreSQL, MySQL, H2, SQLite).

Zero boilerplate — the cache key, read-through, write-through, and volatile invalidation logic live in the library, not your repositories.

Comments