Also curious to hear what people think of Bf-tree.

  https://vldb.org/pvldb/vol17/p3442-hao.pdf
  https://github.com/microsoft/bf-tree

I've read this paper and it's a neat idea. It hasn't been introduced into popular oss databases like postgres and mysql, and my understanding is it has some drawbacks for real prod use vs ths simplistic benchmarks presented in the paper.

Would love to know if anyones built something using it outside of academic testing.