On 04/11/15 06:10, Patrik Nordwall wrote:
Publishing to topic with Distributed PubSub will only transfer the message once per node that has any subscribers.

However, how large is large? Akka remoting is not designed for large messages, so you should consider splitting it up in parts or use another side channel, such as http or Akka IO.
hmm, what sideeffect a large message can have (other than increasing the buffer sizes, maximum-frame-size ?) ?



/Patrik
tis 3 nov. 2015 kl. 18:48 skrev 'Konstantinos Kougios' via Akka User List <[email protected] <mailto:[email protected]>>:

    oh....

    maybe breaking the msg into parts but it seems too much of a trouble


    On 03/11/15 17:07, Rüdiger Klaehn wrote:

    UDP is limited to 65507 Bytes. Might be a bit small for large
    messages...

    I assume serialization is optimal, but still the data size will
    be large.

    Maybe UDP multicast (
    http://doc.akka.io/docs/akka/2.4.0/scala/io-udp.html#UDP_Multicast )
    is what I need,  though I need to dig in a bit to the docs to
    understand how it works

    On 03/11/15 13:42, Rüdiger Klaehn wrote:

        This might not be very nice, but you could pre-serialize your
        large
        object to a akka.util.ByteString. Serialization of an
        akka.util.ByteString should be much cheaper than serializing
        a large.
        complex data structure. I am assuming that the serialization
        overhead
        is what you want to avoid.

        On Mon, Nov 2, 2015 at 11:28 PM, Kostas kougios
        <[email protected]
        <mailto:[email protected]>> wrote:

            I am looking for an efficient way to broadcast a case
            class only once to my
            akka cluster, i.e. broadcast it only once (so it is
            serialized only once
            over the wire) and received by multiple actors. Then one
            of those actors
            will reply back to the sender.

            Is there a way to do this? I know I can broadcast it to a
            Cluster (Dist
            pub/sub) but this will send the message once to each
            ActorSystem. My message
            might be large so I am looking for a 1-send-over-the-wire
            only, if possible.

            Thanks

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