[zeromq-dev] Reliability question

[Pieter Hintjens]

On Fri, Jul 30, 2010 at 8:57 AM, Burak Arslan
<burak.arslan at arskom.com.tr> wrote:

> you must confirm subscription of every peer using another channel before
> broadcasting via the publisher to the subscribers.

> ps: i think this question has earned faq status.

It definitely has.

Pubsub is a radio broadcast model.  You can synchronize subscribers
out-of-band using request-reply, if you need to get them all lined up
before starting the broadcast.  You can also use out-of-band
request-reply to get snapshots / state so that late subscribers can
catch up.

I'll document this clearly in the user guide.

-Pieter