26 Sep
2022
26 Sep
'22
9:17 p.m.
by the chance I was playing exactly with the same setup these days, in a
lab everything works just fine. +1 to the initial question.
On Mon 26 Sep 2022 at 18:33, Joel Serrano <joel(a)textplus.com> wrote:
+1 in this situation haha, also hoping to get some
nice input :D
On Mon, Sep 26, 2022 at 9:20 AM Matteo Brancaleoni <mbrancaleoni(a)gmail.com>
wrote:
--
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Well,
I asked a similar question here
https://lists.kamailio.org/pipermail/sr-users/2022-July/115160.html but
no answer yet :)
What I see on my side is that it indeed works, the only drawback is that
the same contact is getting synced to DB, which causes a duplicate error
unless you use the "db_insert_update" option.
Done that seems that it works ok (did tested in prod yet), and I had the
all the contacts live on all nodes and on db. The only downside that maybe
can happen is that the periodic sync may skew a bit the expire time and
maybe give a contact some more seconds, but it really depends on timings of
the clusters.
But I'm really interested in the answer, too :)
-- Matteo
On Mon, Sep 26, 2022 at 4:07 PM Alex Balashov <abalashov(a)evaristesys.com>
wrote:
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Hi,
Are there any known contraindications for replicating contacts using
dmq/dmq_usrloc, and injecting those contacts into a database on one of the
nodes using usrloc with `db_mode` 1 or 2?
Predictably, this is being done to support the use-case of getting
registration status from database. If you think this should be done with
JSONRPC, I am in complete agreement with you, but it’s not up to me. :-)
I am doing this with `db_mode` 2 now, and finding that, for a small
number of AORs, one can find instances where they are consistently stored
in memory but not present in the `location` table. The overall proportion
of these AORs, out of thousands, seems to be quite small. It was initially
somewhat higher, and it went down once I increased usrloc `timer_processes`
and increased the sync interval from 30 to 60 seconds.
Nevertheless, it is still non-zero, and I am getting intermittent
reports. I wonder if there are some prior experiences with this and
anything to watch out, or if `db_mode` 1 might be a superior choice. I
personally cannot see how that would be; it seems to have all the
performance downsides of mode 3. But perhaps if something about it is more
“problem-free” vis-a-vis DMQ, it’s worth a shot?
— Alex
--
Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/
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