Hi all,

Thanks a lot for the development of StateFun. It is very cool. 

I don’t understand how the feedback operator works exactly and I want to 
understand how this works because when benchmarking my system the internal 
messages seem to be a lot slower as opposed to directly invoking a function 
from an ingress and outputting to an egress and I want to understand why this 
is.

Specific questions I have are the following:

* How is the feedback stream exactly merged with the input stream from 
ingresses? What ordering and time is used to merge the two streams? (Also, when 
is this done?)
* How exactly does this mechanism work with checkpointing?

I tried to find specific documentation on this mechanism, but I could not find 
any. Could you point me in the right direction for some documentation? 

Kind regards,

Martijn de Heus

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