Hello,
Currently I use MySQL 5.6 but I plan to migrate to PostgreSQL.
My application uses two databases : the total volume is 1TB on my hard drives.
I made some tests on PostgreSQL administration but I have a problem with Master / Slave.
How to update the cluster master / slave with a very short break time ?
I tried to update a slave (9.3 => 9.4) and connect it to the master 9.3 but it doesn't work.
If I have to stop the master, migrate it to 9.4, start it and repeat these steps for the slaves the breaking time is really long.
I thank you in advance.
Bertrand