# Старая схема (v1)
database:
  host: localhost
  port: 5432
  name: myapp
  user: admin
  password: secret

# Новая схема (v2)
database:
  primary:
    host: db-primary.internal
    port: 5432
    name: myapp
    credentials:
      username: app_user
      password_secret_ref: vault://secrets/db/password
  replicas:
    - host: db-replica-1.internal
    - host: db-replica-2.internal