Google Cloud SQL: Can I change machine type with zero downtime? -

we need change our google cloud sql instance db-g1-small db-n1-standard-1. can change 0 downtime?

edit 1

i think found answer. seems take few seconds of downtime.

you can change instance's tier @ time, few seconds of downtime.

https://cloud.google.com/sql/pricing

edit 2

i tried on our dev env. downtime 10 sec.

while true; date; curl https://api.xxx.com/v1/items; echo ""; sleep 1s; done  2016/8/29 16:24:50 jst {"ok"} 2016/8/29 16:24:51 jst error 2016/8/29 16:25:01 jst {"ok"} 

the note changing tier in few seconds under first generation section of page.

for second generation instance, may take several minutes.