@Aaronontheweb Thanks for your reply! At this moment, I don't worry much the storage part or writing log from the application. I am talking about creating a tool (APM tool) that can monitor the application that uses akka.net. So, I am focusing on the number of actors that beings created and messaging being sent between the actors. (e.g. how many actors or child actors in the system, how many messages are passing around, how fast it is to create the actor or sent the message, the error rate or dead letter rate and etc. ) Do you recommend to use Gossip to get those information? Or, Do you recommend using .NET api and instrumentation for that?