We've put Riak through its paces at Voxer. Anything we do that ends up on a disk drive is put there by Riak. We store data of all types, from simple JSON to crazy JSON and even raw audio bytes. We've got over 60 physical machines dedicated just to Riak.
In this talk, we'll go over the Voxer architecture a bit and dig into some of the ways that we use Riak in our system, including some interesting data structures. In spite of our deep, tender love and commitment to Riak, we'll also talk about some of the things that Riak hasn't done so well for us.