jsf scalability issues?

[measwel]

LS,

I read recently, that JSF is not well suited for big projects, as it faces scalability issues when the number of concurrent users of the webapp grows. This is due to the controller beans that get instantiated per user. Therefore, so the article stated, it is advisable to use another framework for big projects.

I would like to know if there is any truth to that, if JSF is indeed less scalable than say struts2.

Thank you,
MPK