On Mon, 2007-11-12 at 16:27 +0000, Daniel Watts wrote:
SQL backend has been possible for a long time and there's already a kind-of working version available:
Wasted a bit of time getting it to work again. It's horribly inefficient when saving messages and EXPUNGE seems to be somewhat broken, but at least it kinda works. :)
http://dovecot.org/patches/mail-sql.patch http://dovecot.org/patches/mail-sql.tar.gz
Unpack mail-sql.tar.gz to src/plugins/, apply the patch, run autogen.sh and configure. Use:
mail_location = sql:pgsql:dbname=mails host=localhost user=foo password=bar
(the key=value pairs are named the same as in dovecot-sql.conf)
Hey that's cool - didn't realise this was available . Timo what is your own opinion of sql based mail storage vs maildir (or dbox)? When is it a good idea?
I don't really know. Maybe if you want to use the mail database for something special. Performance definitely isn't a reason.
I'm not sure if this would allow multi-master replication though. I know MySQL offers support for it, but what happens when both masters have added a row that causes a unique key collision? Can you write triggers to fix those cases automatically?