I discovered it when looking into runtimes for my Bachelor's thesis. So far it's serving me quite well, especially after they reworked the Sentry file system abstraction (when I started file access was horribly slow). Networking works very well although they reimplemented it themselves. It also allows me to do base image layering using Overlay since I only keep binaries/source code/assets after a successful build.
Overlay is a nice feature, we had to give that up with Firecracker. We pre-optimize filesystems instead, tgz them, and then cache them in various regions. Boot times are _insanely_ good, which we like, although a lot of apps (especially node apps) are slow to start.
