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Does PG has its own data cache? I don't think so.
I think PG just using the filesystem cache.On Fri, Jul 10, 2015 at 2:06 AM, Andy Colson <andy@squeakycode.net> wrote:On 7/9/2015 12:41 PM, Tom Lane wrote: Andy Colson <andy@squeakycode.net> writes: My question is: Will PG cache only the index (assuming it can always do an Index Only Scan), or will it cache the table as well? The table blocks would fall out of cache if they're never touched. regards, tom lane Sweet! Thanks Tom. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription:http://www.postgresql.org/mailpref/pgsql-general
On 7/9/2015 12:41 PM, Tom Lane wrote: Andy Colson <andy@squeakycode.net> writes: My question is: Will PG cache only the index (assuming it can always do an Index Only Scan), or will it cache the table as well? The table blocks would fall out of cache if they're never touched. regards, tom lane Sweet! Thanks Tom. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription:http://www.postgresql.org/mailpref/pgsql-general
Andy Colson <andy@squeakycode.net> writes: My question is: Will PG cache only the index (assuming it can always do an Index Only Scan), or will it cache the table as well? The table blocks would fall out of cache if they're never touched. regards, tom lane
My question is: Will PG cache only the index (assuming it can always do an Index Only Scan), or will it cache the table as well?
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