>From how I understand things, cookies are just for transportation (inside HTPP header) and have nothing to do with persistence of sessions. If you don't wont to use cookies, and are not afraid of getting your sessions hijacked , you can put your session ID into the URL.

Take a look at yaws_session_server.erl, which is responsible for sessions. You could write your own version with the persistent storage of your preference (e.g. mnesia) instead of ets tables. I actually started to do that myself for my specific needs.

regards
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Roberto Saccon