On Wed, Nov 3, 2010 at 2:20 PM, Neale Ferguson <[email protected]> wrote:
> What are the limitations if I change from PUSH/PULL to PUB/SUB – can I have > multiple publishers and a single subscriber? Are messages that are published > before the subscriber connects subject to loss? This is explained in Ch1 of the Guide. Pubsub is a radio broadcast model and subscribers will pretty much always lose the start of a stream. > Before I go trolling through the code is there a simple explanation of how > the messages are queued before the PULL side gets up and running and why > that same mechanism doesn’t take over when the PULL side disappears? I would > be prepared to work on providing this capability if it isn’t architecturally > not feasible. Messages in transit (kernel, TCP buffers, etc.) will simply be lost if the peer disconnects. One way of recovering is to use acknowledgements and resends. Push/pull does not allow or provide this. You may do that using xrep/xreq. -Pieter _______________________________________________ zeromq-dev mailing list [email protected] http://lists.zeromq.org/mailman/listinfo/zeromq-dev
