To increase capacity you'll be scaling out nodes, not shard regions. Shards are logical managers/buckets, they help organize and support the actual processing actors, but it's those actors that are distributed. You'll have one for each unique message destination, regardless of your number of shards. If you're worried about resource utilization, you're likely best off using standard JVM monitors and monitoring the Java application as a whole for resource usage. Do your metrics at that level and add hosts as required.
Also, actors are already single-threaded, please see the Actor docs about how they work. Messages sent to an actor will be handled by a single thread. Within your receive block/method you can decide to use additional threads to farm out message processing work and increase actor throughput. -- >>>>>>>>>> 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 http://groups.google.com/group/akka-user. For more options, visit https://groups.google.com/d/optout.
