The author of LMDB makes pretty bold performance claims and people are too eager to believe them.
You shouldn't propagate those claims unless you've done benchmarking to verify them.
The author of LMDB doesn't really make bold claims, he actually just included LMDB (and the venerable Berkeley DB) in LevelDB's published benchmarks. The benchmarks were developed by the LevelDB team.
http://symas.com/mdb/microbench/
http://symas.com/mdb/inmem/
The author of LMDB makes pretty bold performance claims and people are too eager to believe them.
You shouldn't propagate those claims unless you've done benchmarking to verify them.