The MarkLogic server is a native XML database. It's designed and written from the ground up to do XML. That's why it's so much better/faster than the competitio

The MarkLogic server is a native XML database. It's designed and written from the ground up to do XML. That's why it's so much better/faster than the competition. Storage-wise, it's often the case that the MLS DB for a project is actually the same size or smaller than the original data even after you add all of the indexes, etc. Performance-wise, the MarkMail.org site is running a 4 node cluster. The cluster is totally managed by the ML server and is fully transactional across the cluster. Feature-wise, the ML server provides all of the underlying goodies for doing not only the various text searches but also the slick faceted search.