Re: [HACKERS] Anyone working on asynchronous NOTIFY reception?

I don't know how many clients you're running, but sending an empty
query every second or three isn't too much of a performance hit (I
know it still sucks though)..

could you cc copies of mail to the list?  I'm sure we're very
interested..

On Wed, 15 April 1998, at 16:57:43, Bruce Momjian wrote:

> > I'm looking at an application that involves several client processes
> > communicating in real time via a pgsql database.   "Real time" means
> > that when one client writes something, any other clients that are
> > interested need to know about it within a few seconds at most.
> > The other clients can use LISTEN/NOTIFY to detect updates --- but
> > I don't think I can accept the notion of continuously doing empty
> > queries to receive the notifies.  That'll drive performance into the
> > ground.  What I want is for a client to be able to sleep until
> > something interesting happens.
>
> The person who knows the most about this is:
>
>     dz@cs.unitn.it (Massimo Dal Zotto)
>
>
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