direction: down

coord: "Coordination Layer" {
  style.font-size: 32
  direction: right

  sd: "Service Discovery" {
    style.font-size: 28

    k8s: "K8s: CRDs + API" {
      style.font-size: 22
      shape: rectangle
    }
    bm: "Bare metal: etcd" {
      style.font-size: 22
      shape: rectangle
    }
  }

  nats: "NATS (Optional)" {
    style.font-size: 28

    kv: "KV Cache Events" {
      style.font-size: 22
      shape: rectangle
    }
    rs: "Router Replica Sync" {
      style.font-size: 22
      shape: rectangle
    }
    js: "JetStream Persistence" {
      style.font-size: 22
      shape: rectangle
    }
  }
}

frontend: Frontend {
  style.font-size: 28
  shape: rectangle
}
plan: Planner {
  style.font-size: 28
  shape: rectangle
}
worker: Worker {
  style.font-size: 28
  shape: rectangle
}

coord -> frontend
coord -> plan
coord -> worker