[zeromq-dev] NetMQ: is PUB/SUB filtering done at publisher side?

[Giacomo Tesio]

Hello everybody, I'm working to my first ZeroMQ based real-world
application and I have a few questions:

1) I'm working on .NET and I choosed NetMQ instead of CLRZMQ just on the
base of github activity. I've noted there are some differences between the
two API (for example I had to Subscribe("") instead of SubscribeAll()) but
they seem minor differences at a first look. Is there any difference in
functionality that I should be aware of?
2) I have to use a topic based PUB tcp socket: is PUB/SUB filtering done at
publisher side?
3) I noted (in debug) that the publisher blocks while the subscribers
handle each message: I've tried to minimize the impact of this with a queue
of messages of subscriber side, with the subscriber that fills the queue
and another thread consuming it. Is there a better approach?

Thanks a lot!


Giacomo
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