[zeromq-dev] two-way pub-sub, good design?

[Guangyu Zhou]

Dear community, I am trying 0mq on a personal trading system where latency
is to be minimized. I went through the zguide yet didn't find a pattern
that perfectly suit my requirement.

I come up with a design as following. The two way pub-sub feels strange.

other part1 pub----                    ---->sub persistent worker1
other part2 pub----            ---->sub persistent worker2
other part3 pub---->sub(ex)         pub(in) ---->sub persistent worker3
            * manager*
other part1 sub<----pub(ex)         sub(in) <----pub persistent worker1
other part2 sub<----                              <----pub persistent
worker2
other part3 sub<----                              <----pub persistent
worker3

some uncommon features required are:
1. workers are not identical, and some tasks may involve multiple workers.
2. workers have inner states.  so they are not killed when jobs done, they
idle.
3. workers may be dynamically added or removed.
4. heavy calculation may happen in worker.

Before proceeding,  some thoughts from you 0mq expert will be very helpful.

Thanks a lot.
-- 
Guangyu ZHOU
Mobile:    +86 139 8945 4329 (China)
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