java - Akka. How to scale-up? -


what things need done scale-up (scale horizontally) application written using akka? speaking, adding new node in cluster, need install jre on , run .jar file akka-client application?

while akka scales well, can if application well-designed handle scalability. adding nodes cluster may or may not help.

for example, if akka application provides rest api of sort, how requests routed between nodes? state stored, if not in akka itself? if it's stored in akka, how ensure subsequent requests same client end on same node? if it's stored outside runtime (e.g., sql database), how handle blocking behavior? if sql database becomes bottleneck, what?

akka offers terrific scalability, i've built several such systems atop actor model achieve that. however, can't throw nodes @ problem , hope actors fix it. scalability more rigorous thinking , design hoping actors magic wand.


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