[Dovecot] dsync replication available for testing

[Timo Sirainen]

On 5.3.2012, at 15.11, Attila Nagy wrote:

>> dsync doesn't currently take enough advantage of modseqs and send only the changed data.
> Hm. What is your estimate about the performance capability of the current "best" replication scheme available in Dovecot?
> I know it's hard to tell, because there are a lot of parameters, but do you think it's good for a real world environment with (10-1000*x :) thousands of users, and a lot of changes?

The plan is to get it working with at least a few thousand users to several tens of thousands.

> BTW, it would even better to have something scalable as Cassandra, so Dovecout wouldn't have to worry about replication and (read/write) scalability.

Yes, that's also in my future plans, but it's a larger change. Also I don't think Cassandra (or any nosql?) still supports application-level merging of data after split brain.