t

akka.stream.actor

RequestStrategy

trait RequestStrategy extends AnyRef

An ActorSubscriber defines a RequestStrategy to control the stream back pressure.

Source
ActorSubscriber.scala
Linear Supertypes
AnyRef, Any
Known Subclasses
MaxInFlightRequestStrategy, OneByOneRequestStrategy, WatermarkRequestStrategy, ZeroRequestStrategy
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Inherited
  1. RequestStrategy
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Implicitly
  1. by any2stringadd
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Visibility
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Abstract Value Members

  1. abstract def requestDemand(remainingRequested: Int): Int

    Invoked by the ActorSubscriber after each incoming message to determine how many more elements to request from the stream.

    Invoked by the ActorSubscriber after each incoming message to determine how many more elements to request from the stream.

    remainingRequested

    current remaining number of elements that have been requested from upstream but not received yet

    returns

    demand of more elements from the stream, returning 0 means that no more elements will be requested for now