* Ulrich Windl:
When reading, you just say that MDB has some features BDB does not have. Does that make BDB obsolete technology? I think it depends on the user's demands.
Berkeley DB supports arbitrary key sizes. For some use cases, this is quite handy, but it's apparently not relevant to OpenLDAP.
Multiple concurrent writers are nice on paper, but probably are not worth the complexity for an in-process database.