Packages

object FutureCache

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$.

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  1. final def !=(arg0: Any): Boolean
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  2. final def ##(): Int
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  3. final def ==(arg0: Any): Boolean
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  4. final def asInstanceOf[T0]: T0
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  5. def clone(): AnyRef
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    protected[java.lang]
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    @native() @throws( ... )
  6. def default[K, V](fn: (K) ⇒ Future[V], cache: FutureCache[K, V]): (K) ⇒ Future[V]

    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.

    See also

    standard for the equivalent Java API.

  7. final def eq(arg0: AnyRef): Boolean
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  8. def equals(arg0: Any): Boolean
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  9. def finalize(): Unit
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    protected[java.lang]
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    @throws( classOf[java.lang.Throwable] )
  10. def fromMap[K, V](fn: (K) ⇒ Future[V], map: ConcurrentMap[K, Future[V]]): (K) ⇒ Future[V]

    A com.twitter.cache.FutureCache backed by a java.util.concurrent.ConcurrentMap.

  11. final def getClass(): Class[_]
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    @native()
  12. def hashCode(): Int
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    @native()
  13. final def isInstanceOf[T0]: Boolean
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  14. def keyEncoded[K, V, U](encode: (K) ⇒ V, cache: FutureCache[V, U]): FutureCache[K, U]

    Encodes keys, producing a Cache that takes keys of a different type.

  15. final def ne(arg0: AnyRef): Boolean
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  16. final def notify(): Unit
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    @native()
  17. final def notifyAll(): Unit
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    @native()
  18. def standard[K, V](fn: (K) ⇒ Future[V], cache: FutureCache[K, V]): (K) ⇒ Future[V]

    Alias for default which can be called from Java.

  19. final def synchronized[T0](arg0: ⇒ T0): T0
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  20. def toString(): String
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  21. final def wait(): Unit
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    @throws( ... )
  22. final def wait(arg0: Long, arg1: Int): Unit
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    @throws( ... )
  23. final def wait(arg0: Long): Unit
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    @native() @throws( ... )

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