title: Setup Magento to write on multiple mysql masters
body: <p>I'm completely newbie in mysql cluster. I was trying long ours to find if, when I setup magento with mysql cluster, it will write to one of the nodes or always to one node?</p>
  
  <p>My second question is, when I setup mysql replication: one master and one slave, and master server die, will magento start to write on slave, or my app stop working?</p>
  
  <p>Thanks a lot!</p>