I have always been a fan of ZeroVM. I had decided to take the task of adding multi-threaded support so that we'd have NaCL-enforced security and performance con

I have always been a fan of ZeroVM. I had decided to take the task of adding multi-threaded support so that we'd have NaCL-enforced security and performance constraints, rather than depending upon the Linux kernel for the same. This turned out to be more complex for my skill levels and I gave up mid-way. I recommend that you try out ZeroVM for your Python apps. I've seen great demos where Rackspace devs applied on-the-fly transformations to content being served from swift. e.g. one demo added watermarks to files, another transcoded video streams. At a ZeroVM workshop in Atlanta at the OpenStack summit some years ago, one of the participants started a discussion with the ZeroVM devs about running ZeroVM apps via the firmware of SSD drives. Unfortunately, this nice technology didn't quite catch on.