class RedisClient::Config

def initialize(
  url: nil,
  host: nil,
  port: nil,
  path: nil,
  username: nil,
  password: nil,
  db: nil,
  **kwargs
)
  if url
    url_config = URLConfig.new(url)
    kwargs = {
      ssl: url_config.ssl?,
    }.compact.merge(kwargs)
    db ||= url_config.db
    host ||= url_config.host
    port ||= url_config.port
    path ||= url_config.path
    username ||= url_config.username
    password ||= url_config.password
  end
  super(username: username, password: password, db: db, **kwargs)
  if @path = path
    @host = nil
    @port = nil
  else
    @host = host || DEFAULT_HOST
    @port = Integer(port || DEFAULT_PORT)
  end
  @server_key = [@path, @host, @port].freeze
end