Londiste from skytools (backed by skype) is an excellent replication product that matches mysql replication. We use it, it's bulletproof and dead easy to admini

Londiste from skytools (backed by skype) is an excellent replication product that matches mysql replication. We use it, it's bulletproof and dead easy to administer. However the lack of hot standby is definitely a keenly felt issue...it can take an entire day to warm up a new slave.