what are the patterns that can be implemented, when I use Struts framework?

I am designing a web based application. I am planning to stick to struts framework.

Can anyone lemme know what are suitable patterns to implement when struts framework is adopted? (other than DAO's)

What are the performance issues should I take care of when I am building a web application using struts?

Thanks for the help.

Patterns? Use them all.

The biggest performance issue in Struts is finding the balance between memory and processor/network loads.

Basically, keeping things in session will increase memory load. Not keeping things in session usually means more method calls and db calls to retrieve needed information.

A good rule of thumb is to keep things in request scope unless ABSOLUTELY necessary. You may even get to avoid creating user sessions altogether, depending on what you're doing.