title: Why ETCD exist two same key?
body: <p>I use <code>etcd</code> store config for Golang my app, running for a while, I find two same keys in the <code>etcd</code> and it's curious for me, the <code>key</code> in <code>etcd</code> is not unique ?</p>
  <p>I use <code>etcdctl get --prefix /</code> get the keys.</p>