We wrote it. Everything is derived from proto for us. Some of that is hand-written tooling, some is off the shelf. Mostly you have to be aware at design time

We wrote it. Everything is derived from proto for us. Some of that is hand-written tooling, some is off the shelf. Mostly you have to be aware at design time of what this approach entails. Proto is not elegant and the data model and implementation (especially the very poor performance of maps in the Go implementation) can leave a lot to be desired, but it's a thing that pretty much supports everything. It has good enough performance without headaches. Lowest common denominator can be quite useful and so can constraints.