How many actors can be created in service fabric cluster nodes

Question

1. What is max no of actors in service fabric cluster
2. how does it executes concurrently

Answer 1

1. An Actor ID is a long value, so 18,446,744,073,709,551,615 actors per ActorType.
2. An Actor instance executes one thread at one time by default (single threaded execution). Multiple Actor instances can be active at the same time.