class ActiveSupport::Cache::Store

def retrieve_pool_options(options)
  if options.key?(:pool)
    pool_options = options.delete(:pool)
  else
    pool_options = true
  end
  case pool_options
  when false, nil
    return false
  when true
    pool_options = DEFAULT_POOL_OPTIONS
  when Hash
    pool_options[:size] = Integer(pool_options[:size]) if pool_options.key?(:size)
    pool_options[:timeout] = Float(pool_options[:timeout]) if pool_options.key?(:timeout)
    pool_options = DEFAULT_POOL_OPTIONS.merge(pool_options)
  else
    raise TypeError, "Invalid :pool argument, expected Hash, got: #{pool_options.inspect}"
  end
  pool_options unless pool_options.empty?
end