zetcd: running ZooKeeper apps without ZooKeeper

The CoreOS Blog introduces the firstbeta release, v0.0.1, of zetcd. "Distributed systems commonly relyon a distributed consensus to coordinate work. Usually the systemsproviding distributed consensus guarantee information is delivered in orderand never suffer split-brain conflicts. The usefulness, but rich designspace, of such systems is evident by the proliferation of implementations;projects such as chubby, ZooKeeper, etcd, and consul, despite differing in philosophyand protocol, all focus on serving similar basic key-value primitives fordistributed consensus. As part of making etcd the most appealing foundationfor distributed systems, the etcd team developed a new proxy, zetcd, toserve ZooKeeper requests with an unmodified etcd cluster."