> How should I decide between a project that is interesting and not explained from a project that is not intended for me? You first try rocksdb/lmdb, learn it

> How should I decide between a project that is interesting and not explained from a project that is not intended for me? You first try rocksdb/lmdb, learn it all, break things, hit limitations, and lower your standards enough to search for other things, that don't have comprehensive documentation but just a small readme/paper and checking the code. Don't expect to build a better Postgresql on the first try.