This initially started out as one long write up, but i figured it would be easier and more manageable to split it into a few pieces. I hope you enjoy it, or find it useful.
to be…ered a “tree”, similarly, a graph needs at least a single node in order to be considered a “graph”. A graph with just one node is usually referred to as a singleton graph, although we won’t really be dealing with those.
etcd or other config management service