yes, but now, in new versions, by fixing things little by little, they will have great headlines: Lower data usage because we intern key-names or we compress da

yes, but now, in new versions, by fixing things little by little, they will have great headlines: Lower data usage because we intern key-names or we compress data, Better performance because we don't mmap anymore. But they also had bad-headlines: By default, we now save stuff to disk(safe-writes) so performance will suck a little.