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

From Scott Marlowe
Subject Re: Ignore hash indices on replicas
Date
Msg-id CAOR=d=19idTXka8_uFonhwOWOcRNmX3qeHTM+7ZzWp7Pv+K1nw@mail.gmail.com
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In response to Ignore hash indices on replicas  (Steven Schlansker <steven@likeness.com>)
Responses Re: Ignore hash indices on replicas  (Steven Schlansker <steven@likeness.com>)
List pgsql-general
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.


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