Dave Page wrote:
> Alexander Staubo wrote:
>> On 6/1/07, Joshua D. Drake <jd@commandprompt.com> wrote:
>>>> In the meantime, Cybertec (http://www.postgresql.at/, an Austrian
>>>> company) just announced a commercial synchronous multimaster
>>>> replication product based on 2-phase commit. It's expensive, and I
>> [snip]
>>> I could be completely cranked but I believe that product is based on
>>> PgCluster which is horrendously slow.
>> Well, dang, that's disappointing. Last I checked, the PGCluster design
>> was fundamentally unscalable.
>
> Multimaster replication generally is - thats why Slony-2 will almost
> certainly never exist in the form that it was originally imagined.
> Although I'm not (and never have been) an Oracle user, I've heard that
> RAC has it's own issues in this area as well.
IMO, the future is application partitioning, not multi-master.
Also, what I find interesting here is that PostgreSQL on modest hardware
does excessively well.
I have a client right now that is running an 8 core, 16 gig box with
only 14 spindles.
They are processing 6ktps and it takes 14 tomcat servers to bring the
database down.
Any multi-master solution is going to fall over well before 6ktps.
Sincerely,
Joshua D. Drake
P.S. I should note that we are working toward more than 6ktps and will
report back ;)
>
> Regards, Dave
>
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