etcd is a distributed key value store that provides a reliable way to store
data across a cluster of machines. It’s open-source and available on GitHub.
etcd gracefully handles leader elections during network partitions and will
tolerate machine failure, including the leader.
Your applications can read and write data into etcd. A simple use-case is to
store database connection details or feature flags in etcd as key value pairs.
These values can be watched, allowing your app to reconfigure itself when they
Advanced uses take advantage of the consistency guarantees to implement
database leader elections or do distributed locking across a cluster of