Clustering Solution


I'm interested in peoples thoughts on the best choice for a database clustering solution.

I have a database that is mostly varchars and numbers that doesn't store any binary data at all. It's used at about 70% read and 30% writes - though we're using memcached at the moment so it's not really hit that hard.

We're currently using mysql with m/cluster, but are interested in a new solution. Possible candidate so far are unicluster (which doesn't seem mature yet.) or DRBD.

Had anyone had a similar experience and can make any suggestions?