Yes, DistributedPubSub sends one message on the wire per machine, and then distributes it further locally, to all interested local actors. See the documentation:
"For efficiency the message is sent over the wire only once per node (that has a matching topic), and then delivered to all subscribers of the local topic representation." (http://doc.akka.io/docs/akka/2.4.7/scala/distributed-pub-sub.html#Publish) Be aware though that PubSub messaging has at-most-once guarantees so you have to prepare for message loss. -Endre On Wed, Jun 8, 2016 at 10:36 PM, Rob Crawford <rob5...@gmail.com> wrote: > As I recall, the distributed pub/sub sends a single message to each node, > then the message is distributed to the subscribers on those nodes. So it's > likely more efficient to use this method to ask the actors for their state. > More efficient both ways -- no million-iteration loop to generate the > messages, and no transmission of millions of messages. > > > -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to akka-user+unsubscr...@googlegroups.com. > To post to this group, send email to akka-user@googlegroups.com. > Visit this group at https://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Akka Team Typesafe - Reactive apps on the JVM Blog: letitcrash.com Twitter: @akkateam -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. To unsubscribe from this group and stop receiving emails from it, send an email to akka-user+unsubscr...@googlegroups.com. To post to this group, send email to akka-user@googlegroups.com. Visit this group at https://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
