High Availability: MySQL master/slave now on DotCloud
blog.dotcloud.com
blog.dotcloud.com
How do you plan to price this? Will it just be twice the price of the non-replicated MySQL service? (If so, that would seem a little high given the slave can only be used for standby and not for serving requests.)
It would be awesome if this supported having the master and slave in different AWS availability zones / AWS regions / clouds.