On Wed, 31 Aug 2016 12:04:23 -0400
Keith <keith(at)keithf4(dot)com> wrote:
> All depends on how you're monitoring your slave lag. Check this blog
> post and if you're seeing actual byte lag, then you could have cause
> for concern.
It's not because the master is idle... there is tons of write traffic.
And the way I measure the lag is about as directly as you can: I
periodically insert a timestamp into a specific table on the master,
and then poll the hot-standby until the inserted timestamp has
appeared.
Regards,
Dianne.