[Twisted-Python] SQLAlchemy, Twisted, and sAsync

[Matthew Williams]

I have recently started a project using Twisted with a MySQL backend.  
 From previous posts to this and other lists, it seems that ORMs and  
threads don't get along too well... and, as far as I can tell, there's  
no way to get away from threads if you don't want longish queries to  
block your entire application.

At this point, I am using SQLAlchemy's SQL builder functionality (but  
not ORM layer) and using sAsync to manage the threading. Does anyone  
have experience with this technique and, if so, with what results?

It took me quite some time to piece together everything I could find  
related to sAsync (which seems to be a dead but functional project),  
so I threw up a quick Trac page for it at http://sasync.org.

Thanks in advance for any feedback!

Matthew