[zeromq-dev] multiple publisher synchronization

[Yi Ding]

Is XPUB/XSUB only available in versions 3.0 and up?

I've read the guide and don't see anything mentioned about them in there.

Thanks,
Yi

On Wed, Dec 28, 2011 at 5:50 PM, Joshua Foster <jhawk28 at gmail.com> wrote:
> I'm wondering if you could use an XPUB and XSUB socket. You know when to start sending when you receive a subscription.
>
> Joshua
>
> On Dec 28, 2011, at 5:42 PM, Yi Ding wrote:
>
>> Hi everyone,
>>
>> I've been trying to build this program where I have multiple publishers (where each publisher represents a distinct data source).  To avoid the slow joiner problem, it looks like the preferred mechanism (correct me if I'm wrong) is to use a REQ-REP socket to send a synchronization packet from the client to the server at which time the server knows it's "safe" to start sending out data to the client.
>>
>> So my question is, what's the preferred way to synchronize/prevent slow joiner when I'm listening to multiple publishers?  I've considered connecting a single REQ socket to multiple REP sockets, using one REQ socket per publisher, using PUSH/PULL or DEALER/ROUTER sockets.
>>
>> Thanks,
>> Yi
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>
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