Akka cluster sharding

[j...@spineor.com]

Hi 

I have just started using Akka and creating a demo application using Akka persistence. This application has only one actor persisting event in cassandra. I am running this application in docker cluster. Currently I am running it in 3 nodes. But the problem I am facing is when I am persisting any event, the node which gets hit is update by that event, but other two nodes are not getting updated by that event. So when I am fetching the even it some times comes blank and some times it fetches the event, depending upon which not gets the fetch request. Will cluster sharding help me on this. I am not if this is the proper use case of sharding. Kindly suggest me a solution on this.

Thanks

Joy

[Martynas Mickevičius]

Hi,

are your Cassandra nodes in one cluster?

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[Patrik Nordwall]

A PersistentActor with a given persistenceId can only be active at one place (single writer principle). Cluster Sharding will help you with that.

/Patrik

[j...@spineor.com]

Yes, 9 nodes in 1 cluster