[nanomsg] Re: Fanout pattern
- From: Martin Sustrik <sustrik@xxxxxxxxxx>
- To: nanomsg@xxxxxxxxxxxxx
- Date: Thu, 17 Jan 2013 09:04:50 +0100
On 16/01/13 23:22, Holger Winkelmann wrote:
This just reminds me about subscription forwarding in nanomsg, is this already
available?
Not yet. Still to be done.
In any case, I would like to base it on the system implemented in
crossroads (different subscription types: prefixes, regexps, even custom
filtering) rather that the fixed-filtering-algorithm (prefix matching)
as in ZeroMQ.
One thing that may be of interest to you is that in this system the
filtering in intermediate devices (e.g. in the router) may not be
perfect (some messages that don't match may get through the filter just
to be filtered out at the terminal subscriber). This, in turn, allows
for effective and memory-bounded filtering algorithms (using hash tables
and such) suitable to be implemented in hardware.
Martin
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