| google.golang.org/grpc | Package grpc implements an RPC system called gRPC. |
| google.golang.org/grpc/credentials/insecure | Package insecure provides an implementation of the credentials.TransportCredentials interface which disables transport security. |
| google.golang.org/grpc/internal/envconfig | Package envconfig contains grpc settings configured by environment variables. |
| google.golang.org/grpc/keepalive | Package keepalive defines configurable parameters for point-to-point healthcheck. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |