> 1. Is the reference to the user storable? Yes, but it will store the complete user object in the database, not just a reference.
> 2. Do I need to create more columns in the table or everything goes > to the "a_session" column? The latter. > 3. Could one set up things in a way that allows the database to see > the timestamps and program a trigger to delete old sessions? Yes. You will have to hack the Apache::Session code to do it, but it's not very hard. Just make it store a timestamp in a different table. Or put a trigger in the database to update a timestamp column when the a_session column gets updated. However, this implies that every time a user accesses a page you will be updating his session. That's not true for most sites. If you really need an accurate time for when the user last accessed a page, you will have to make sure to update his session every time. See the information on forcing an update in the Apache::Session docs. - Perrin
