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.
