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From Dain Sundstrom <d...@iq80.com>
Subject Re: Load Balancing in Geronimo
Date Wed, 26 Oct 2005 16:34:41 GMT
On Oct 25, 2005, at 4:44 PM, Michael Malgeri wrote:

>
> I'm working with a University that wants to implement an  
> application on Geronimo that supports 10,000 concurrent users.
>
> There are a number of use cases but here's one that captures the  
> primary issue
>
> Will this scenario work in the absence of clustering:
>
> 1. Load balancer in front of many linux servers each running Geronimo
> 2. Each instance or Geronimo connected to the same database server
> 3. Application only composed of JSPs, Servlets and Javabeans (no EJBs)
> 4. Users will be accessing shared data such as registering for a class
>
> In this case, if the following is true:
>
> 1. Load balancer handles session stickiness
> 2. Database server handles transactional access to shared data
> 3. Users can live without session failover
>
> Will this work?
> What are the unforeseen problems?
> What are the unforeseen restrictions?

It should work.  If they are only using the one database connection,  
I'd suggest that they use a one-phase (normal non-two-phase) JDBC  
connection.  JDBC drivers tend to be more reliable in one-phase mode.

-dain

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