[Dovecot] Real-time sync using dsync

[Цветков Алексей]

Hi!
I am very interested with dsync of replication and I assemble the test
stand. Me one question interests. In the version 2.2rc1 tcp target for
dsync was added. Somebody how to adjust it can write?

On Thu, 28 Feb 2013 08:08:50 +0100
Michael Grimm <trashcan at odo.in-berlin.de> writes:

>On 2013-02-28 6:55, list at airstreamcomm.net wrote:
>
>> I have to +1 Nikolaos' sentiment for a geographically distributed
>> mail cluster, we have been hoping for a Dovecot solution to this
>> problem for the last few years.
>
>I am using that solution over a year now. Both mail servers have been
>running ~500 km apart. Regular mail traffic is very low, though, only
>a couple of users and ~1000 mails a day.
>
>I haven't been using such an elaborate test scenario you are
>describing here, but I did test dsync with huge loads of locally
>injected messages (100000 messages at either site, or simultaneously).
>Thus, I am very much interested in your stress test results simulating
>a real world scenario in a much better way than my more ore less lab-
>like scenario, only.
>
>As Timo mentioned before, there have been bugs (especially with v2.1),
>but I never ever lost a single mail since starting dsync replication.
>Main issues have been duplicates, instead, and this is history after
>all those improvements Timo has achieved in v2.2.
>
>Thus, whoever is interested in a cheap man's fail-over mail cluster
>with geographically distributed servers and moderate load, I would
>encourage to consider and test replicator/dsync v2.2, now.
>
>Just my two cents,
>Michael
>
>
>


--
Best regards,
Aleksey Tsvetkov
System Administrator
Company Grand Vision
tel. +7(495)933-39-79, ext. 184