# Packages
Package etcdhttp implements HTTP transportation layer for etcdserver.
Package membership describes individual etcd members and clusters of members.
Package rafthttp implements HTTP transportation layer for etcd/raft pkg.
Package snap handles Raft nodes' states with snapshots.
Package v2discovery provides an implementation of the cluster discovery that is used by etcd with v2 client.
Package v2error describes errors in etcd project.
Package v2http provides etcd client and server implementations.
Package v2store defines etcd's in-memory key/value store in v2 API.
Package v3alarm manages health status alarms in etcd.
Package v3client provides clientv3 interfaces from an etcdserver.
Package v3compactor implements automated policies for compacting etcd's mvcc storage.
Package v3discovery provides an implementation of the cluster discovery that is used by etcd with v3 client.
Package v3election provides a v3 election service from an etcdserver.
Package v3lock provides a v3 locking service from an etcdserver.
Package v3rpc implements etcd v3 RPC system based on gRPC.
# Functions
UpdateCapability updates the enabledMap when the cluster version increases.
# Interfaces
Cluster is an interface representing a collection of members in one etcd cluster.