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pekko/akka-docs/src/main/paradox/stream/operators/Sink/queue.md

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Sink.queue

Materialize a SinkQueue that can be pulled to trigger demand through the sink.

@refSink operators

@@@div { .group-scala }

Signature

@@signature Sink.scala { #queue }

@@@

Description

Materialize a SinkQueue that can be pulled to trigger demand through the sink. The queue contains a buffer in case stream emitting elements faster than queue pulling them.

Reactive Streams semantics

@@@div { .callout }

cancels when SinkQueue.cancel is called

backpressures when buffer has some space

@@@