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From David Blevins <>
Subject Re: Was: Clustering: Monitoring... - Now: Clustering: OpenEJB...
Date Fri, 05 May 2006 03:58:13 GMT
On May 4, 2006, at 8:37 PM, Filip Hanik - Dev Lists wrote:

> Jules Gosnell wrote:
>> David Blevins wrote:
>>> On May 4, 2006, at 12:57 AM, Jules Gosnell wrote:
>>> Sort of.  Both your explanations involve smartening the java  
>>> clients  on the other end of WS or CORBA to play nice.
>> ??
>> smart java stubs for RMI over OpenEJB-protocol (what is it  
>> called?) or IIOP.
>> for WS, the load-balancer will do it.
>>> The goal of those  protocols is to interop in a language agnostic  
>>> fashion.  WS are all  stateless for EJB, so there is nothing to  
>>> cluster anyway.
>> stateless calls are still clustered - the load-balancing and  
>> failover considerations still exist - you just do not require  
>> session affinity (stickiness). If you are talking about server- 
>> side requirements, then I agree.
>>> But for  IIOP, would we simply not offer clustering to people  
>>> using CORBA to  interop with clients in other languages or on  
>>> other platforms?
>> to tell the truth, these cases have escaped my radar - My CORBA  
>> knowledge is pretty thin and I have only really considered it in a  
>> java/java environment - I am sure that Kresten would be much  
>> better positioned to answer this question... I will CC this to  
>> him, in case he would like to pick it up...
> corba is not far from RMI, and the corba implementation that you  
> use, create their own stubs, and those stubs can do the same stuff
> as smart RMI stubs. I'm sure that corba could even do dynamic  
> proxies in some sort of sense, they werent able to when I used it a  
> long time ago, but if the technology has kept up, then yes, you  
> should be able to build in significant logic in the clients.

All true.  My curiosity is more about the interop side of CORBA where  
it's not the same vendor or language on both ends of the pipe.

Not much of a CORBA guy either, so I'm not sure what can be done in  
that scenario.


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