CurrentlyI useMySQL5.6butI plan tomigrate toPostgreSQL. Myapplication usestwodatabases : the total volumeis1TBonmy hard drives.
I made some tests on PostgreSQL administration but I have a problem with Master / Slave.
How toupdate theclustermaster/ slavewith a very shortbreak 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.