Can we create many actors from the same actor class ?
Assuming you mean Akka actors: As far as I know, spawning many actors of the same class is no more of a concern than spawning many actors of different classes. One example of having multiple actors of the same class is load balancing via routing.
It is routine to have thousands, sometimes even millions, of Actors of the same class. That’s actually much more common than having only a single Actor of a given class.