Re: replicate per tablespace
| От | Keith Fiske |
|---|---|
| Тема | Re: replicate per tablespace |
| Дата | |
| Msg-id | CAG1_KcDMCD=UOvV7efrALbyyg3iNqLDv1Eaz_FN9e8VOs+u-Hw@mail.gmail.com обсуждение исходный текст |
| Ответ на | replicate per tablespace (Andy Colson <andy@squeakycode.net>) |
| Список | pgsql-general |
On Mon, Jan 6, 2014 at 9:22 PM, Andy Colson <andy@squeakycode.net> wrote:
Here's an odd question. Kind of an in the future thing.
I have two db's on two smaller boxes I'd like to combine to one big box. But one db is replicated and the other doesn't need it.
I know currently you must replicate the entire cluster. I was just wondering, would it be a possible way forward to support WAL logging per tablespace. (each tablespace wal's to different directory). Then, as a logical step, could we support replication per tablespace?
Just kinda thinking out loud.
-Andy
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This is more popularly called logical replication. There was a talk about one of the bigger projects to get this incorporated into core at last year's PGCon. It's quite a complex feature to get implemented, so it's probably not going to be around for a while yet. Links to the talk and slides are on the conference website if you're curious to learn more
http://www.pgcon.org/2013/schedule/events/577.en.html
In the mean time, there are several third-party solutions that can provide logical replication, the more popular being Slony & Bucardo. I've been working on one myself as well (Mimeo) that's not quite as advanced as those two, but a little simpler to configure if you just need a few tables replicated.http://www.pgcon.org/2013/schedule/events/577.en.html
http://bucardo.org/wiki/Bucardo
http://slony.info/
https://github.com/omniti-labs/mimeo
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