A very simple cache trait.

Implementations can write adapters that map through to this trait, i.e.

import java.util.concurrent.TimeUnit
import scala.concurrent.Future

import com.github.benmanes.caffeine.cache.{ Caffeine, Ticker }

import play.api.libs.ws.ahc.cache.{
  Cache, EffectiveURIKey, ResponseEntry
}

class CaffeineHttpCache extends Cache {
  val underlying = Caffeine.newBuilder()
    .ticker(Ticker.systemTicker())
    .expireAfterWrite(365, TimeUnit.DAYS)
    .build[EffectiveURIKey, ResponseEntry]()

  def remove(key: EffectiveURIKey) =
    Future.successful(Option(underlying.invalidate(key)))

  def put(key: EffectiveURIKey, entry: ResponseEntry) =
    Future.successful(underlying.put(key, entry))

  def get(key: EffectiveURIKey) =
    Future.successful(Option(underlying getIfPresent key ))

  def close(): Unit = underlying.cleanUp()
}