On Wed, Oct 15, 2014 at 01:24:37PM +0200, Dorvin wrote:
> W dniu 2014-10-15 12:20, Mathieu Westphal pisze:
> 
> > server will send 10 message when the client as the time only to receive and 
> > use one.
> > The thing is, the client doesn't care at all about losing message, but it 
> > cares about getting the last sent message.
> If you send only single part messages then you might use ZMQ_CONFLATE.
In any case i can serialize my messages if necessary
It is working well, thanks.


> >
> > I've tried to use high water mark for that, but it does not seem to work at 
> > all.
> > I've also seen this post from 2011, 
> > http://lists.zeromq.org/pipermail/zeromq-dev/2011-May/011081.html,
> > wich propose the use of dedicated reader thread on the client, but the 
> > downside of this solution is the message are indeed transferred on the 
> > network while they could have been dropped !
> This is no longer necessary as pub/sub filtering is currently performed 
> on publisher's side.
ok
> >
> > My solution is to connect/deconnect the client each time i want to receive 
> > a message, but the connect method take some milliseconds, so it is not good 
> > also.
> >
> This is lengthy operation. If CONFLATE is not an option you may consider 
> doing subscribe/unsubscribe which should be significantly faster. Other 
> option would include changing from pub/sub to f.e. req/rep. This way 
> requestor (previously subscriber) could ask for last message.
This is what i was trying to do just before and it seems to work also.

Mathieu

> 
> 
> Cheers,
> Jarek
> 
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