That’s good, I guess. But not super relevant. Of course, if you don’t actually drive ZK/etcd very hard, its performance doesn’t have as great an impact. But any Etcd/Zookeeper alternative (or Elixir implementation) would have to plan for heavy usage. And when that happens you end up with hard problems to solve. For both of these products, fast disk seems to be a requirement.
You’re also still back to the same quandary. These products need something special beyond what “normal” nodes are required to have. If you melt their functionality into your app/node, then your app/node also needs to assume this specialized characteristic, in addition to whatever product level requirements your distributed nodes have. That was all I was trying to point out in my original response. You can pass the buck around, but it still needs to be paid by something.
