Earlier this month Belgian computer science student Dory Thibault posted a slide deck with the surprising results of a benchmark comparing Cassandra, HBase, MongoDB and Riak. The benchmarks are a part of his mater's thesis, and the slides were difficult to interpret without the accompanying oral presentation.

Thibault has now open-sourced the benchmarks so that others can check his work. "I would like to say that all of this benchmark is an idea that is quite recent and I'm still working on it," Thibault writes. "That means that there could be bugs in my code, errors in my configuration of the various clusters and other kinds of problems."

Here's the original presentation: