Designing Web applications for better performance

Hi,
Let me explain the scenario.
We are following MVC architecture, where we have our JSP pages interacting with a controller
servlet , which decides what action to performed . It is using request despatcher method to redirect
the request object to jsp pages.
We have most of jsp pages as entry screens. We are not using java beans, fearing the complexity of master
details forms . ( we dont know how to use "bean technolagy" in case of detail entry screens).
In forms at a time we can have max 50 rows , with each row having 10 columns. When a particular page
need to be displayes for editing (may be with already existing data), the servlet will populate objects
and jsp will access data from these objects. Once the data is accessed , these objects will be removed
from the session.
Since we are removing the objects from the session (not keeping it certain amount of time too), if the
servlet /another jsp requires some information, we are forced to use "hidden variables". In the current
scenario, we are having at least 40-50 hidden variables passing from a jsp page to servlet.
We decided not to use session objects fearing that it will give lot of problem to server. But now it
is making our client "fat".
Eventhogh our application is big, we are not using any database side coding like triggers,stored procedures
etc? Is this create performance problems?
When our application runs, many times we can find that the request will not get processed correctly
in jrun sever or some times we gets blank window or some time jrun default server hangs.
we are using Jrun 3.0 and Solaris_JDK_1.2.2_05.
Pl. find my following questions.
1. is this right way to do the things (hidden variables).
2. Is creating session variables is going to hamper the performance of the system?

Dear sandhyavk,
From my experience, you are better to put your hidden values into a JavaBean, simply a data object which is saved in a session, after you have accessed to it, you simply invalidate the session indeed. You can find more details from the following links from javaworld.com, I have adopted and amended it for my eIPO system, it is flexible and easy to maintain and understand.
* http://www.javaworld.com/javaworld/jw-01-2001/jw-0119-jspframe.html
* http://www.javaworld.com/javaworld/jw-01-2001/jw-0119-jspframe.html
I do hope that it can give you some ideas.
Best regards,
Anthony Lai

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