# health-check-service (Go)

Status: not implemented yet. May start as a goroutine inside
device-control-service and get split out into its own container later —
kept as a separate directory from day one so the split is a non-event.

Responsibility:
- Periodically (ticker) check `last_seen` for every device in Redis.
- When a device exceeds the offline timeout, flip its `status` to `offline`
  and publish an event for notification-service.
- Good place to demonstrate goroutines + graceful shutdown in Go.