[zeromq-dev] Off-Topic but Relevant - skip if you don't want to reply

asif saeed asif.lse2 at gmail.com
Tue Jan 7 16:05:31 CET 2014


Hi,

I have had an opportunity to work on a distributed system where the
distributed network/IO library was developed using Windows IO Completion
ports. Internally, the library was certainly performing some high-speed
work but it was shoving its messages into the Windows' GUI message queue so
that the GUI applications will always get each message from the distributed
system into its GUI Queue. This almost completely makes code of such a GUI
application using that library single-threaded as the application gets each
message sequentially - like all other regular GUI messages/events it gets
from its GUI Message queue and handles sequentially.

Secondly, the domain logic of application is mostly request-reply and due
to this quasi-single-threaded approach, it does not proceed until it gets
the message from the distributed system. Even the connections with the
application-specific server applications were established using this
asynchronous approach - don't you think that that should have been done
using a synchronous manner? And if the application does everything
sequentially/synchronously in an asynchronous application then what is the
point of developing it in that manner - asynchronous, that is?

I would be thankful if I could have your opinion on this as I think I may
be mistaken and may be there is a strong good reason the way things are
this way and may be you can tell me those possible reasons.

And, yes, I believe, using ZeroMQ would have been much faster in such as
scenario.

Thank you very much in advance,
-Asif
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