MySQL and Symas have worked together for much of 2008 to produce a back-ndb, a back-end module for OpenLDAP that uses MySQL Cluster’s networked clustered database technology for OpenLDAP. Initially, we were concerned about how this would turn out but the advantages of the clustering technology made it worth a try. It turned out much better than expected!
MySQL (Sun) has contributed the source of this back-end to the OpenLDAP project and it is available in source from the project now. We expect it to be included in the next OpenLDAP 2.4 Release (imminent). MySQL will be offering binary distributions for selected platforms by the end of September.
Howard needs to fill in the blanks about what this really means and why it is so intriguing but we wanted to make sure the community knew that the first version of this code is available.

[...] talk on OpenLDAP Replication Strategies, followed by my presentation of OpenLDAP’s new back-ndb backend. Suffice to say, anyone who hasn’t been keeping up with developments in OpenLDAP syncrepl [...]
I guess I never got around to filling in the blanks here, but the recent presentations should do the trick.