Currently nova, the openstack's (http://openstack.org) software for an open cloud server implementation uses redis. In the #openstack IRC channel, there was talk of abstracting the data storage model out. They are thinking that perhaps they will consider other options as it is going to be pluggable - perhaps cassandra? The nova link below has docs that include how redis is plugged in and the other link is a branch that is experimenting with abstracted data stores. justinsb in the openstack channel said if people are interested in plugging in cassandra, look at how nova currently does it but start from his branch - he's hoping that it will make it into mainline - in the meantime, it's a work in progress.
http://nova.openstack.org/ https://code.launchpad.net/~justin-fathomdb/nova/abstract-data-stores Anyway, just thought it was worth mentioning and perhaps watching. Jeremy
