[zeromq-dev] Fwd: Exact matching on subscription topics

[john skaller]

On 19/01/2012, at 12:00 PM, Martin Sustrik wrote:

> 
> However, few simple filtering algorithms (exact, prefix, regexp?) that can be performed at wire speed may be in scope.
> 
> The question here is how to implement the latter.
> 
> The important point is that the filtering algorithm should be distributed to every node in the message distribution tree. Thus, supplying a callback function at the subscriber won't do.

Ah, I see. Ouch. now you want "persistence" for functional data so you can transport it.
The issue then become how to encode it. Regex looks appealing because the encoding
is a string.

> I suggest reading the past posts in this thread. There's a disucssion of the algorithm that would allow for new filtering algorithms that wouldn't break the old intermediate nodes not aware of the new algorithm.

Ok, you don't have a rough data and topic name so I can search the archives?

--
john skaller
skaller at users.sourceforge.net