# `Rheo.LiveDashboard.Page`
[🔗](https://github.com/thanos/rheo/blob/v1.0.0/lib/rheo/live_dashboard/page.ex#L3)

Thin LiveDashboard page over Rheo inspect APIs (ADR 027).

Read-only: group health (lag, inflight, **dead letters / DLQ**). Does not
settle leases. A dead letter is a delivery parked for the group after
`reject` or exhausted nacks — see the [ops guide](ops.html).

![Rheo LiveDashboard — group health](screenshots/Rheo-Screenshot-LiveDashboard.jpg)

Enable with:

    {:phoenix_live_dashboard, "~> 0.8"}

and register in your router:

    live_dashboard "/dashboard",
      additional_pages: [rheo: Rheo.LiveDashboard.Page]

Configure the Rheo instance via application env:

    config :rheo, Rheo.LiveDashboard, rheo: MyRheo

Try without a host Phoenix app: `iex examples/live_dashboard_ops.exs` or
`notebooks/live_dashboard.livemd` (control panel + this page). See the
[ops guide](ops.html).

# `init`

---

*Consult [api-reference.md](api-reference.md) for complete listing*