| From: | Dave Page <dpage(at)postgresql(dot)org> |
|---|---|
| To: | Alexander Staubo <alex(at)purefiction(dot)net> |
| Cc: | "Joshua D(dot) Drake" <jd(at)commandprompt(dot)com>, "gonzales(at)linuxlouis(dot)net" <gonzales(at)linuxlouis(dot)net>, Guillaume Lelarge <guillaume(at)lelarge(dot)info>, Kenneth Downs <ken(at)secdat(dot)com>, nikolay(at)samokhvalov(dot)com, pgsql-general(at)postgresql(dot)org |
| Subject: | Re: Slightly OT. |
| Date: | 2007-06-01 15:27:11 |
| Message-ID: | 46603ACF.2060601@postgresql.org |
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| Lists: | pgsql-general |
Alexander Staubo wrote:
> On 6/1/07, Joshua D. Drake <jd(at)commandprompt(dot)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.
Regards, Dave
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