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我已經編寫了一個Akka應用程序,該應用程序從Kafka獲取輸入,然後使用分片演員處理數據並輸出到Kafka。當發送給分片演員時,對ReactiveKafka的背壓
但在某些場合分片區域不能處理負載,我也得到:
你或許應該實行流量控制,以避免水浸 遠程連接。
如何在此鏈/流中實施背壓?
卡夫卡消費 - >共享演員 - >卡夫卡生產者
從代碼一些片斷:
ReactiveKafka kafka = new ReactiveKafka();
Subscriber subscriber = kafka.publish(pp, system);
ActorRef kafkaWriterActor = (ActorRef) Source.actorRef(10000, OverflowStrategy.dropHead())
.map(ix -> KeyValueProducerMessage.apply(Integer.toString(ix.hashCode()), ix))
.to(Sink.fromSubscriber(subscriber))
.run(materializer);
ConsumerProperties cp = new PropertiesBuilder.Consumer(brokerList, intopic, consumergroup, new ByteArrayDeserializer(), new NgMsgDecoder())
.build().consumerTimeoutMs(5000).commitInterval(Duration.create(60, TimeUnit.SECONDS)).readFromEndOfStream();
Publisher<ConsumerRecord<byte[], StreamEvent>> publisher = kafka.consume(cp,system);
ActorRef streamActor = ClusterSharding.get(system).start("StreamActor",
Props.create(StreamActor.class, synctime), ClusterShardingSettings.create(system), messageExtractor);
shardRegionTypenames.add("StreamActor");
Source.fromPublisher(publisher)
.runWith(Sink.foreach(msg -> {
streamActor.tell(msg.value(),ActorRef.noSender());
}), materializer);
我是Akka框架的新手。但是您可以嘗試使用Akka Streams來照顧背壓技術。 – Advika