Hi,
I have an postgres 10 instance on RDS.
Sometimes I run a Postgres query it takes 30 seconds. Then, I
immediately run the same query and it takes 2 seconds. It appears that
Postgres has some sort of caching. Can I somehow see what that cache
is holding? Can I force all caches to be cleared for tuning purposes?
So I need to clear the cache without restarting/rebooting the postgres
server to check the correct execution plan of my query.
Please help me with your suggestions.
Regards.