>  Perhaps another argument, that I did not mention yet, is that the next
> version of wicket will also provide other ways for storing session state.

That exists today/ for 2.0 and 1.2 actually. Session represents the
session state, but ISessionStore hides where the information is
actually stored. You don't have to use an HttpSession, but can use a
database, file system or whatever you want with Wicket 1.2 too. In
Wicket 2.0, Johan has an optimized version of ISessionStore that uses
HttpSession for only the current page, and dumps older pages to the
file store as a kind of second level cache for back button support.
Also new in 2.0, is that we implemented deferred session creation. As
long as you work with stateless pages, only a volatile session (for
the span of a request) will be created. Thus, if your store uses
HttpSession, no actual session would be created as long stateless
pages are accessed. Certainly for public facing (parts of) sites, this
means a lot for scalability.

> But, in my experience, always leave out the weak arguments (everyone knows
> the next version will solve all the problems, but if it doesn't exist....).

The next version is not a theoretical exercise though. We've been
working on Wicket 2.0 for months now, and even though the constructor
change was quite drastic, it's not a complete rewrite or new
framework. It is accessible in SVN now for anyone to check out, and
all the scalability goodies we scheduled are implemented (deferred
sessions, stateless pages including support for forms and links).
Also, Wicket In Action (scheduled for completion the end of this year)
is about 2.0 too so we *are* planning to work to a final release
within the next six months.

Eelco

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