Re: Ignore hash indices on replicas - Mailing list pgsql-general

From Steven Schlansker
Subject Re: Ignore hash indices on replicas
Date
Msg-id EC640C6C-74F4-40CF-8CFD-1836AF506F87@likeness.com
Whole thread Raw
In response to Re: Ignore hash indices on replicas  (Scott Marlowe <scott.marlowe@gmail.com>)
List pgsql-general
On Aug 19, 2012, at 8:01 PM, Scott Marlowe <scott.marlowe@gmail.com> wrote:

> On Tue, Jul 10, 2012 at 1:09 AM, Steven Schlansker <steven@likeness.com> wrote:
>> I'm using Postgres hash indices on a streaming replica master.
>> As is documented, hash indices are not logged, so the replica does not have access to them.
>>
>> I understand that the current wisdom is "don't use hash indices", but (unfortunately?) I have benchmarks that
>> show that our particular application is faster by quite a bit when a hash index is available.
>
> You could use a slony slave and have different indexes etc between
> master and slave but it's more complex to setup, maintain and monitor
> for most people.

Thanks for the suggestion, but we finally have replication working in a way we understand / like and I don't really
considerthis a viable option.  The built-in replication has been treating us very well. 



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