FutureCache
Creates a function which caches the results of fn in an
com.twitter.cache.FutureCache.
Creates a function which caches the results of fn in an
com.twitter.cache.FutureCache. Ensures that failed Futures are evicted,
and that interrupting a Future returned to you by this function is safe.
A com.twitter.cache.FutureCache backed by a scala.collection.mutable.ConcurrentMap
Encodes keys, producing a Cache that takes keys of a different type.
The FutureCache object provides the public interface for constructing FutureCaches. Once you've constructed a basic FutureCache, you should almost always wrap it with default. Normal usage looks like:
val fn: K => Future[V] val map = (new java.util.concurrent.ConcurrentHashMap[K, V]()).asScala val cachedFn: K => Future[V] = FutureCache.default(fn, FutureCache.fromMap(map))
We typically recommend that you use Guava Caches. There's an API that makes it easy to use Guava caches, and can be found in the util-collection lib. The object is called com.twitter.cache.guava.Guava$.