Packages

abstract class Cache[K, V] extends javadsl.Cache[K, V]

API MAY CHANGE

General interface implemented by all cache implementations.

Self Type
Cache[K, V]
Annotations
@ApiMayChange() @DoNotInherit()
Source
Cache.scala
Linear Supertypes
javadsl.Cache[K, V], AnyRef, Any
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. Cache
  2. Cache
  3. AnyRef
  4. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
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Visibility
  1. Public
  2. Protected

Instance Constructors

  1. new Cache()

Abstract Value Members

  1. abstract def apply(key: K, genValue: () => Future[V]): Future[V]

    Returns either the cached Future for the given key or evaluates the given value generating function producing a Future[V].

  2. abstract def clear(): Unit

    Clears the cache by removing all entries.

    Clears the cache by removing all entries.

    Definition Classes
    Cache → Cache
  3. abstract def get(key: K): Option[Future[V]]

    Retrieves the future instance that is currently in the cache for the given key.

    Retrieves the future instance that is currently in the cache for the given key. Returns None if the key has no corresponding cache entry.

  4. abstract def getOrLoad(key: K, loadValue: (K) => Future[V]): Future[V]

    Returns either the cached Future for the given key, or applies the given value loading function on the key, producing a Future[V].

  5. abstract def keys: Set[K]

    Returns the set of keys in the cache, in no particular order Should return in roughly constant time.

    Returns the set of keys in the cache, in no particular order Should return in roughly constant time. Note that this number might not reflect the exact keys of active, unexpired cache entries, since expired entries are only evicted upon next access (or by being thrown out by a capacity constraint).

  6. abstract def put(key: K, mayBeValue: Future[V])(implicit ex: ExecutionContext): Future[V]

    Cache the given future if not cached previously.

    Cache the given future if not cached previously. Or replace the old cached value on successful completion of given future. In case the given future fails, the previously cached value for that key (if any) will remain unchanged.

  7. abstract def remove(key: K): Unit

    Removes the cache item for the given key.

    Removes the cache item for the given key.

    Definition Classes
    Cache → Cache
  8. abstract def size(): Int

    Returns the upper bound for the number of currently cached entries.

    Returns the upper bound for the number of currently cached entries. Note that this number might not reflect the exact number of active, unexpired cache entries, since expired entries are only evicted upon next access (or by being thrown out by a capacity constraint).

    Definition Classes
    Cache → Cache

Concrete Value Members

  1. final def !=(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  2. final def ##: Int
    Definition Classes
    AnyRef → Any
  3. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toany2stringadd[Cache[K, V]] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  4. def ->[B](y: B): (Cache[K, V], B)
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toArrowAssoc[Cache[K, V]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  5. final def ==(arg0: Any): Boolean
    Definition Classes
    AnyRef → Any
  6. def apply(key: K, f: (Promise[V]) => Unit): Future[V]

    Returns either the cached Future for the key or evaluates the given function which should lead to eventual completion of the promise.

  7. final def asInstanceOf[T0]: T0
    Definition Classes
    Any
  8. def clone(): AnyRef
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
  9. def ensuring(cond: (Cache[K, V]) => Boolean, msg: => Any): Cache[K, V]
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toEnsuring[Cache[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  10. def ensuring(cond: (Cache[K, V]) => Boolean): Cache[K, V]
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toEnsuring[Cache[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  11. def ensuring(cond: Boolean, msg: => Any): Cache[K, V]
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toEnsuring[Cache[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  12. def ensuring(cond: Boolean): Cache[K, V]
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toEnsuring[Cache[K, V]] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  13. final def eq(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  14. def equals(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef → Any
  15. def finalize(): Unit
    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
  16. def get(key: K, block: () => V): Future[V]

    Returns either the cached Future for the given key or the given value as a Future

  17. final def getClass(): Class[_ <: AnyRef]
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  18. final def getFuture(key: K, genValue: Creator[CompletionStage[V]]): CompletionStage[V]

    Returns either the cached CompletionStage for the given key or evaluates the given value generating function producing a CompletionStage<V>.

    Returns either the cached CompletionStage for the given key or evaluates the given value generating function producing a CompletionStage<V>.

    Definition Classes
    Cache → Cache
  19. def getKeys(): Set[K]

    Returns the set of keys in the cache, in no particular order Should return in roughly constant time.

    Returns the set of keys in the cache, in no particular order Should return in roughly constant time. Note that this number might not reflect the exact keys of active, unexpired cache entries, since expired entries are only evicted upon next access (or by being thrown out by a capacity constraint).

    Definition Classes
    Cache → Cache
  20. def getOptional(key: K): Optional[CompletionStage[V]]

    Retrieves the CompletionStage instance that is currently in the cache for the given key.

    Retrieves the CompletionStage instance that is currently in the cache for the given key. Returns None if the key has no corresponding cache entry.

    Definition Classes
    Cache → Cache
  21. def getOrCreateStrict(key: K, block: Creator[V]): CompletionStage[V]

    Returns either the cached CompletionStage for the given key or the given value as a CompletionStage

    Returns either the cached CompletionStage for the given key or the given value as a CompletionStage

    Definition Classes
    Cache → Cache
  22. final def getOrFulfil(key: K, f: Procedure[CompletableFuture[V]]): CompletionStage[V]

    Returns either the cached CompletionStage for the key, or evaluates the given function which should lead to eventual completion of the completable future.

    Returns either the cached CompletionStage for the key, or evaluates the given function which should lead to eventual completion of the completable future.

    Definition Classes
    Cache → Cache
  23. def hashCode(): Int
    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  24. final def isInstanceOf[T0]: Boolean
    Definition Classes
    Any
  25. final def ne(arg0: AnyRef): Boolean
    Definition Classes
    AnyRef
  26. final def notify(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  27. final def notifyAll(): Unit
    Definition Classes
    AnyRef
    Annotations
    @native()
  28. final def synchronized[T0](arg0: => T0): T0
    Definition Classes
    AnyRef
  29. def toString(): String
    Definition Classes
    AnyRef → Any
  30. final def wait(): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  31. final def wait(arg0: Long, arg1: Int): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
  32. final def wait(arg0: Long): Unit
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()

Deprecated Value Members

  1. def formatted(fmtstr: String): String
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toStringFormat[Cache[K, V]] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  2. def →[B](y: B): (Cache[K, V], B)
    Implicit
    This member is added by an implicit conversion from Cache[K, V] toArrowAssoc[Cache[K, V]] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from javadsl.Cache[K, V]

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromCache[K, V] to any2stringadd[Cache[K, V]]

Inherited by implicit conversion StringFormat fromCache[K, V] to StringFormat[Cache[K, V]]

Inherited by implicit conversion Ensuring fromCache[K, V] to Ensuring[Cache[K, V]]

Inherited by implicit conversion ArrowAssoc fromCache[K, V] to ArrowAssoc[Cache[K, V]]

Ungrouped