@type t() :: %ExScylla.Types.Metrics{
  connection_timeouts: non_neg_integer(),
  errors_iter_num: non_neg_integer(),
  errors_num: non_neg_integer(),
  fifteen_minute_rate: float(),
  five_minute_rate: float(),
  latency_99_percentile_ms: non_neg_integer() | nil,
  latency_avg_ms: non_neg_integer() | nil,
  mean_rate: float(),
  one_minute_rate: float(),
  queries_iter_num: non_neg_integer(),
  queries_num: non_neg_integer(),
  request_timeouts: non_neg_integer(),
  retries_num: non_neg_integer(),
  total_connections: non_neg_integer()
}