direction: right

internet: "Internet"

k8s: "Kubernetes cluster" {
  ingress: "Ingress / LB"
  replicas: "Keycloak replicas" {
    direction: right
    kc1: "KC 1" { class: accent }
    kc2: "KC 2" { class: accent }
  }
  cache: "Infinispan\ndistributed cache"
  ingress -> replicas.kc1
  ingress -> replicas.kc2
  replicas.kc1 <-> cache
  replicas.kc2 <-> cache
}

data: "Data layer" {
  db: "PostgreSQL HA" { shape: cylinder }
}

internet -> k8s.ingress: "HTTPS" { class: principal }
k8s.replicas.kc1 -> data.db
k8s.replicas.kc2 -> data.db