Returns a specification to start this module under a supervisor.

See Supervisor.

@spec health_check_connect(Wayfarer.Router.target()) :: :ok

Increment the health check connection counter for the specified target.

@spec proxy_connect(Wayfarer.Router.target()) :: :ok

Increment the proxy connection counter for the specified target.

@spec proxy_count(Wayfarer.Router.target() | [Wayfarer.Router.target()]) :: %{
  required(Wayfarer.Router.target()) => non_neg_integer()
}

Return the total number of proxy requests for the provided targets.

@spec request_count(Wayfarer.Router.target() | [Wayfarer.Router.target()]) :: %{
  required(Wayfarer.Router.target()) => %{
    proxied: non_neg_integer(),
    health_checks: non_neg_integer()
  }
}

Return the total number of requests for the provided targets.