NOTE I erroneously called this engine fractal_btree when first released, but I have since learned that what we have implemented is indeed much less sophisticated than Tokutek's Fractal Tree®. Hence, the name change to lsm_btree. LSM B-Tree Storage This Erlang-based storage engine may eventually provide an alternative to Basho Bitcask and Google's LevelDB. Of those two, lsm_btree is closer to Level