[
  {relay_server, [
    {udp_server, [
      {enabled, true},
      {listener, 'relay_server/udp'},
      {port, 7000},
      {idle_timeout, 30000},
      {max_connections, 1024},
      {udp_options, [binary, {reuseaddr, true}]}
    ]}
  ]},

  %% 系统日志配置，使用 OTP logger
  {kernel, [
    %% 设置 Logger 的 primary log level
    {logger_level, debug},
    {logger, [
      {handler, default, logger_std_h,
        #{
          level => debug,
          formatter => {logger_formatter, #{template => [time, " [", level, "] ", msg, "\n"]}}
        }
      },

      {handler, disk, logger_disk_log_h,
        #{
          level => debug,
          config => #{
          file => "log/debug.log",
          max_no_files => 10,
          max_no_bytes => 524288000
        },
          formatter => {logger_formatter, #{template => [time, " [", level, "] ", msg, "\n"]}}
        }
      }

    ]}
  ]}

].