In what way does Tornado not support psycopg2? Because the Tornado code includes some convenience functions for working with an unmodified MySQLdb driver, I assume that FriendFeed also used the MySQLdb driver with no modifications. If the MySQLdb driver works with Tornado, shouldn't psycopg2 also work?
By using an unmodified MySQLdb driver, FriendFeed did not make asynchronous calls to the database. I searched around and found this comment w/ response from Paul Buchheit about the issue: http://news.ycombinator.com/item?id=1479301
Do you need to make async calls to the database because your queries are slow?
