https://bugs.openldap.org/show_bug.cgi?id=10509
--- Comment #2 from Howard Chu hyc@openldap.org --- The most notable new features in LMDB 1.0: - support for incremental backup - support for page-level checksums and encryption - support for DB on raw block devices - support for 2-phase commit - support for page sizes up to 64KB
plus a variety of other additions to the API
Also, hooks have been added to back-mdb to use page-level encryption and to set the DB pagesize. Using larger pages means you can use larger RDNs and multival values, among other things.
Support for 2-phase commit didn't make it into back-mdb yet.