I have had my eye on CockroachDB for some time. Put simply Cockroach DB is a Postgres compatible Multi-Master database meaning you can have multiple write nodes. I have set this up locally approximately 6 months ago. It was effortless to get going on MacOS. This weekend I was diving a little deeper and wanted to see if I could get Cockroach to run on my RaspberryPi 4.
The RaspberryPi 4 supports a 1.5GHz quad-core ARM Cortex-A72 CPU. The key difference here is ARM, there are no compiled binaries availiable. I was unable to compile the source code without some modifications to a few files which II will document eventually. The end result was I have a cluster running across a Raspberry Pi4 and a Machine running Ubuntu on an intel i3.