| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/coreos/etcd/etcdserver/etcdserverpb | Package etcdserverpb is a generated protocol buffer package. |
| github.com/coreos/etcd/mvcc | |
| github.com/coreos/pkg/capnslog | |
| github.com/jonboulle/clockwork | |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |