LMDB is an ultra-fast, ultra-compact key-value embedded data
store developed by Symas for the OpenLDAP Project. By using memory-mapped files,
it provides the read performance of a pure in-memory database while still
offering the persistence of standard disk-based databases, and is only limited
to the size of the virtual address space.
mdb_copy The mdb_copy utility copies an LMDB environment. The environment can be copied regardless of whether it is currently in use. No lockfile is created, since it... mdb_dump The mdb_dump utility reads a database and writes its contents to the standard output using a portable flat-text format understood by the mdb_load(1) utility. mdb_load The mdb_load utility reads from the standard input and loads it into the LMDB environment envpath. The input to mdb_load must be in the output format specified... mdb_stat The mdb_stat utility displays the status of an LMDB environment.