communicating actors. This means that you don't need to know who you
are talking to, you just put your communication `Put` request in a
mailbox, and it will be matched with a complementary `Get`
request. Alternatively, actors can interact through **classical
synchronization mechanisms** such as |API_s4u_Barrier|_, |API_s4u_Semaphore|_,
communicating actors. This means that you don't need to know who you
are talking to, you just put your communication `Put` request in a
mailbox, and it will be matched with a complementary `Get`
request. Alternatively, actors can interact through **classical
synchronization mechanisms** such as |API_s4u_Barrier|_, |API_s4u_Semaphore|_,