[zeromq-dev] XREP vs. ROUTER

Pieter Hintjens ph at imatix.com
Fri Mar 18 16:46:08 CET 2011

On Fri, Mar 18, 2011 at 4:19 PM, Martin Sustrik <sustrik at 250bpm.com> wrote:

> Btw, anyone out there using ZMQ_PAIR anymore? What about dropping it in
> 3.0? Hearing Zed Shaw saying something like "I don't know how to use it.
> I've never used a pair socket myself," makes me hope that that's the case.

Well, as far as I can tell there are proper use cases for PAIR,
especially over inproc. I've documented these and explained them in
detail in the Guide.

However like much of this discussion, the gap between the theory and
the practice is huge. You may imagine people "want to use" 0MQ in
various ways but that's back to front. People (for the most part
afaict) simply want to solve clear and present problems, and have to
then try to make the 0MQ lego bricks fit that somehow.

You should never, as a technical developer, argue that your users' use
cases do not matter. What you can argue is that they're misusing the
tool, but then you have to offer a better answer than "your problem is


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