lmdb: lmdb (Lightning Memory-mapped key-value database) lmdb: lmdb: LMDB is an ultra-fast, ultra-compact key-value embedded data store lmdb: developed by Symas for the OpenLDAP Project. By using memory-mapped lmdb: files, it provides the read performance of a pure in-memory database lmdb: while still offering the persistence of standard disk-based databases, lmdb: and is only limited to the size of the virtual address space. lmdb: lmdb: Homepage: http://symas.com/mdb/ lmdb: lmdb: