I love seeing open source coming from companies under the company repo and not only from developers, this means a lot looking at a company, it means they actually care about the ecosystem and the community around the languages they use.
Thanks! We figure, if we write infrastructure stuff that is not part of our core IP, we might as well open it so it won't rot, or at least rot much slower - and you might even get improvements to what you do.
Even if it's not a big project like redash, it still helps if you get occasional bug reports and pull requests. Another added bonus - people tend to write higher quality code if they know it's going to be open.
Here are a few of our other projects besides redash and Inbloom:
HLL can only estimate cardinality, it can't test for the existence of a key. The idea is the same - sacrifice some precision and gain a huge memory saving. But they don't share anything beyond that in terms of the math.