akka - How to provide subscriber with routing capability -

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i have following path stream -

 kafkastream[message] ->   kafkastream[message] -> mergedkafkastream[message] -> stream[enrichedmessage] -> i/o  kafkastream[message] ->

i not sure how write in akka stream way. tried following (pseudo).

kafkastream extends actorpublisher[message] {  }  iohandler extends actorsubscriber {  }

k1, k2, k3 kafka streams publishers

f = flow[message].map(_.enrichmessage)  flowgraph { b =>   k1 ~> merge   k2 ~> merge   k3 ~> merge   merge ~> f ~> iohandlersink }

so way connect publisher sink. here problem want resolve slow io. iohandler actor slow processing message, how can have multiple iohandlers , should able distribute tasks. , want maintain pressure not using fire , forget using router.

i new akka stream, suggest me way out.

thanks

you can route multiple iohandler sinks using balance junction in flowgraph.


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