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Bill HarrisBill Harris 

State Management in Visualforce

Is it possible to create sessions, viewstate and cache in visualforce???

ESES
Visualforce takes care of these things for you. There is a wizard eaxmple (titled "Creating a Wizard") in the devguide that may help you understand how you may leverage the built-in capabilities of the framework to maintain state in your controller (actually you don't have to do much).