Comment by 8note
1 day ago
the swap from interface to network call is still non-trivial.
you get to have new problems that are qualitatively different from before like timeouts, which can break the adsumptions in the rest of your code about say, whether state was updated or not, and in what order. you also then get to deal with thundering herds and circuit breakers and so on.
Sure is more complex - but as I said key thing is to define those interfaces in a way that can be networked - you are just passing data not behaviour and the calls could fail to complete.
In terms of timing the call is synchronous and either succeeds or fails - the details like timeouts/ asynch underhood etc are hidden by the proxy - in the end the call succeeds or fails and if you surface that as a synchronous call you hide the underlying complexity from the caller.
A bit like opening a file and writing to it - most platform apis throw exceptions - and your code has to deal with it.