Re: PG replication across DataCenters

On Dec 9, 2013, at 8:09 AM, Thomas Harold wrote:

> On 11/22/2013 5:57 AM, Albe Laurenz wrote:
>> Kaushal Shriyan wrote:
>>> I have read on the web that Postgresql DB supports replication
>>> across data centers. Any real life usecase examples if it has been
>>> implemented by anyone.
>>
>> Well, we replicate a 1 TB database between two locations. It is a
>> fairly active OLTP application, but certainly not pushing the limits
>> of what PostgreSQL can do in transactions per second.
>>
>
> Something that section 25 in the pgsql documentation is not clear about for hot-standby with WAL log shipping using the built-in streaming:
>
> Can you choose which databases / tables on the master server get streamed to the hot-standby read-only server at the remote site? If not, I suspect we'll have to go with either Slony or Bucardo.

No, with the built-in binary replication, it's all or nothing, and the slaves have to have the exact same schema as the master (no adding or removing indices, for example.)

Out of curiosity what did you find unclear about http://www.postgresql.org/docs/9.3/static/different-replication-solutions.html?