production:
  clients:
    default:
      database: ...
      hosts:
        - ...
        - ...
      options:
        user: ...
        password: ...
        ssl: true
        min_pool_size: 5
        max_pool_size: 50
    transactions:
      <<: *production_client
      hosts:
        - <%= ENV['TRANSACTIONS1'] %>
        - <%= ENV['TRANSACTIONS2'] %>