[infinispan-dev] hotrod client - initial connection

[Manik Surtani]

On 10 Mar 2010, at 15:33, Galder Zamarreno wrote:

> On Wed, 10 Mar 2010 14:47:29 +0100, Manik Surtani <manik at jboss.org> wrote:
> 
>> 
>> On 10 Mar 2010, at 13:08, Mircea Markus wrote:
>> 
>> 
<SNIP />

>>> 
>> 
>> The last one is the correct approach.  The second one could be  
>> implemented as an option, but probably later on if there is sufficient  
>> demand.  The first approach is definitely a no-go - much too complex if  
>> the server needs to maintain open connections to each and every client.
> 
> Guys, am I missing something here? Didn't we agree on this email thread  
> that we wouldn't be piggybacking this information with each request?
> 
> See outcome of  
> http://lists.jboss.org/pipermail/infinispan-dev/2010-January/002183.html  
> that ends with a +1 from Manik:  
> http://lists.jboss.org/pipermail/infinispan-dev/2010-January/002213.html

Hang on, there is some confusion here re: events vs. topology changes.  The previous threads were related to *key change* events.  Not cluster formations, etc.

> We had thought of piggybacking at the beginning and based on Alex's  
> feedback, we decided clients would register and the servers would send  
> events to them. See "Event Handling" section in the wiki:  
> http://community.jboss.org/wiki/HotRodProtocol#Event_Handling that  
> explains the only way cluster formation changes will be sent around. This  
> has been present in this format since almost 2 months ago.

Either mechanism would work in the end, but IIRC we decided to defer a generic remote event mechanism (e.g., for key change events) till a later release.  Cluster topology information still needs to go out to clients though.  

I am assuming this will still be implemented?

> 
> Mircea, I think it would help to read previous discussions of the protocol  
> to understand better the rationale behing the protocol specification.
> 
>> 
>> Cheers
>> --
>> Manik Surtani
>> manik at jboss.org
>> Lead, Infinispan
>> Lead, JBoss Cache
>> http://www.infinispan.org
>> http://www.jbosscache.org
>> 
>> 
>> 
>> 
>> 
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> 
> 
> -- 
> Galder Zamarreño
> Sr. Software Engineer
> Infinispan, JBoss Cache
> 
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--
Manik Surtani
manik at jboss.org
Lead, Infinispan
Lead, JBoss Cache
http://www.infinispan.org
http://www.jbosscache.org