Re: frightening message

On 6/30/25 11:25 AM, Paul Dekkers wrote:
> There is replication via sync_client and sync_server; it's rolling 
> replication, asynchronous, and not explicitly advertised as 
> bi-directional, but in my experience you can setup a master-replica 
> relation in both directions in particular if you send client-traffic 
> to one at a time (like with a haproxy that has a preferred server and 
> does pollig). Maybe the latter is over cautious, but at least that's 
> how I felt confident enough to use it ;-)

I'm confused about the difference between using master-replication in 
the simpler case and your "over cautious" case?

For example, in the non-"over cautious" case, what happens when the 
master connects to the other server and it discovers a change on the 
other server? Does that change get synced back? (Perhaps in practice but 
not advertised so?)

In my current Dovecot setup the master only does a replication when the 
master has a change to make on the other server, but any changes it 
discovers on the other server will get synced back. Yes, there can be a 
delay if the master has no activity, but that's reasonable..

Is this how Cyrus's replication works?


Thanks,

-kb


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