Hi guys,

I'm wondering are there any drawback on using Identify and ActorIndentity 
reply for flow control mechanism.
Why I want to use Identify & ActorIndentity - because those are implicitly 
implemented in all actor.

So let's say producer is sending messages with high rate to consumer, and 
after each N messages sent producer will send Identify and more N messages, 
thus ActorIndentity reply means that actor finished with all previous 
messages, and producer can send more N messages.
Idea that slow consumer will have up to 2N messages + Identify
It will give me ability to decrease pressure on consumer and better 
throughput then Pull or Ack based approaches

Consumer actor state example with N=2

*PROCESSING*
msg1
*MAILBOX*
msg2
Identify
msg3
msg4

after a while:

*PROCESSING*
msg3
*MAILBOX*
msg4
msg5
Identify
msg6
msg7


Thanks in advance.

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