How WebDynpro/JCO do the session management?

Hi expert,
Current we have one R3 system as our backend system, we would like to extend it via Webdynpro java and JCO in the frontend, but we don't know how java do the session management with backend R3 system?
For example, user logon in the frontend and connect to R3 via JCO, after once calling, I would like to store somthing in R3 system so that the second calling of this user can reuse it to save time and improve performance, would it be possible to do it via JCO?
Thanks.

Ya,
Have a look at following threads.
Maintaining caching for a user session in webdynpro
<b>- Chintan</b>

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