Ian G Batten wrote: > > On 08 Oct 08, at 1119, Bron Gondwana wrote: > >> >> On Wed, 8 Oct 2008 09:24:49 +0100, "Ian G Batten" >> <ian.batten@xxxxxxxxxxxxxx> said: >>> What's the testing status of the SQL backend for cyrusdb? I'll >>> switch batten.eu.org over to it, but that only has a dozen or so >>> users; ftel.co.uk's 1000+ users might be a little tenser. I'm keen to >>> switch as the ability to replicate cyrusdb as well as replicating the >>> entire mailsystem is attractive. >> >> You are aware that cyrus replication replicates DB records for all the >> important things as well, aren't you? > > Yes, of course. It's just that having, many years ago, experienced the > loss of a cyrusdb, being able to keep up-to-date copies of it which I > can use without the nuclear option of failing over to my off-site > replica is a good thing. So I will shortly have my whole Cyrus instance > (~60K mailboxes, ~1000 users, ~4TB of mail) replicated via GigE to a > remote site. But if my local instance went south just because Cyrus DB > had gone, being able to simply switch cyrusdb to a MySQL/PostgresQL > replica while keeping mail service on the master is preferable to doing > a full off-site failover. We were only looking at SQL to replace BDB (deliver.db, tls_sessions.db), because we still think that skiplist is superior from mailboxes.db and seen.db. If you do some heavy testing with the BDB code we'd be interested in your results. -- Kenneth Murchison Systems Programmer Project Cyrus Developer/Maintainer Carnegie Mellon University ---- Cyrus Home Page: http://cyrusimap.web.cmu.edu/ Cyrus Wiki/FAQ: http://cyrusimap.web.cmu.edu/twiki List Archives/Info: http://asg.web.cmu.edu/cyrus/mailing-list.html
