final
class
ConcurrentObserver[-T] extends Observer[T]
Value Members
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final
def
!=(arg0: AnyRef): Boolean
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: AnyRef): Boolean
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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def
finalize(): Unit
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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def
onComplete(): Unit
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def
onError(ex: Throwable): Unit
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def
onNext(elem: T): Future[Ack]
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(): Unit
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
Inherited from AnyRef
Inherited from Any
An observer wrapper that ensures the underlying implementation does not receive concurrent onNext / onError / onComplete events - for those cases in which the producer is emitting data too fast or concurrently without fulfilling the back-pressure requirements.
The
Future
returned byonNext
on each call is guaranteed to be completed only after downstream has processed the call.For high-contention scenarios it is very expensive in terms of both memory usage and throughput. If one needs to send
onNext/onComplete
events concurrently and buffering, but without the requirement foronNext
to return aFuture
that's only complete when the event was processed by downstream (i.e. thread-safe buffering), then one is better served by BufferedObserver.