Not a high volume of users, and 7 transactions per second? Should fit on 
a single medium box (if not a laptop) if you do it right.

You have to worry about creating objects if you write your own framework 
(you can put beans in session or requests, and request is better 
mostly), and then you have 2 projects, your app and a framework, and you 
won't do better than the Struts team and what about framework bugs?
Also, with Struts, my clients are able to write several modules(pages) 
per day per developers, how's that for  productivity or beating the 
schedule?
Some of the  Struts sites are 50 times more concurrent users I have 
worked on, no problem.

The slow part is DAO in J2EE (and ADO in .NET). Avoid any EJB, they do 
not scale.

Some good choices is RowSet(I do metadata w/ reflection to auto gen SQL 
updates - RowSet also avoids BO/DTO/VO mapping and GC), Resin, pgSQL, 
Eclipse or CodeGuide IDE, Linux/KDE and J:Rockit VM or IBM VM (Sun VM 
and Sun Inc. have issues). Sample good practices code on 
http://basicPortal.sf.net, FREE!

(If you have a large app or large # users, let a mentor help. many are 
on this list, it is cost effective, but not because of Struts only)

V.
Struts Mentor
917 345 1445 [EMAIL PROTECTED]
("Mentor's helps you do it faster/cheaper)


David Zimmerman wrote:
> Hi,
> we are building a webshop for a site with a high volume of users, approx. 800 
>concurrent users and 25k transactions per hour. We are going to use J2EE as the 
>ground platform. I am now considering some design choices where using Struts is one 
>of them. However I have some questions regarding the performance of Struts. I know 
>this issue has been up many times before but I have never been able to find any 
>satisfying answers, so...
> 
> What, if any, overhead does the Struts controller generate? This question must of 
>course be seen in the context of writing your own controller or using any other 
>framework. However, what is Struts overhead?
> 
> What overhead does the use of form beans generate (in the sense of objects created, 
>memory use, the use of reflection, speed)
> 
> Custom tags (Struts' or other). Would they be applicable in a case like this? 
>Wouldn't there be a massive creation of objects for every request?
> 
> Please help me out here! I really want your knowledge on this!
> 
> Regards
> David Zimmerman
> 
> 
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