On 31 May 2013 22:09, crocket <[email protected]> wrote: > Imagine a situation where some messages are urgent and need to be > delivered faster than low priority messages. > > ZeroMQ has no notion of message priority. > > Is it possible ever? >
With TCP you have normal traffic and out-of-band traffic (break in telnet) that is it. To add priority it means you need a priority queue somewhere. ZeroMQ by name can thus not support that at a low layer but it is easy to add one above ZeroMQ. The natural choice would be the dealer / router and xpub / xsub socket types and add an envelope with the priority. This would allow reuse of ZeroMQ's subject filtering mechanism. -- Steve-o
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