[zeromq-dev] message pattern question

[Andrew Hume]

for this sort of thing, i normally do PUB/SUB from server to clients,
and each client does a PUSH back to the server.
this rarely loses packets (on teh PUB/SUB) and any lost
are covered by the retry logic you need to do in case a client goes down.

On Apr 27, 2013, at 10:34 PM, Feiyi Wang wrote:

> hi all,
> 
> I am new to zeromq and very much intrigued by its message pattern support. As I try to put these concepts into the context of large-scale application for a mental exercise, I am not sure if I am thinking along the right way.
> 
> Say I have a server/client architecture with a large but relative stable set of clients (# of client could amount to a million). A frequent need is that server side wants ALL clients to take certain action and hope for some confirmation that these actions indeed take place.
> 
> SUB/PUB patterns seems design for cases where it doesn't matter if you miss some updates, and it doesn't seem to provide any feedback channel for publisher.
> 
> REP/REQ patterns means that server side needs to maintain a HUGE number of connections with all clients, and have to wait for responses from all clients. 
> 
> Is there a better way to think or address these issues, or REQ/REP is THE way for it?
> 
> Thanks 
> 
> Feiyi
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-----------------------
Andrew Hume
623-551-2845 (VO and best)
973-236-2014 (NJ)
andrew at research.att.com



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