apiRequestsErrorsTotalMD = NewCounterMD(apiRequestsErrorsTotal,
		"Total number of requests with (4xx and 5xx) errors", "name", "type")
	apiRequests5xxErrorsTotalMD = NewCounterMD(apiRequests5xxErrorsTotal,
		"Total number of requests with 5xx errors", "name", "type")
	apiRequests4xxErrorsTotalMD = NewCounterMD(apiRequests4xxErrorsTotal,
		"Total number of requests with 4xx errors", "name", "type")
	apiRequestsCanceledTotalMD = NewCounterMD(apiRequestsCanceledTotal,

)

// ResponseRecorder - is a wrapper to trap the http response
// status code and to record the response body
type ResponseRecorder struct {
	http.ResponseWriter
	io.ReaderFrom
	StatusCode int
	// Log body of 4xx or 5xx responses
	LogErrBody bool
	// Log body of all responses
	LogAllBody bool

	TimeToFirstByte time.Duration
	StartTime       time.Time
	// number of bytes written
	bytesWritten int

| `minio_api_requests_5xx_errors_total`          | `counter` | Total number of requests with 5xx errors                | `name,type,pool_index,server`    |
| `minio_api_requests_4xx_errors_total`          | `counter` | Total number of requests with 4xx errors                | `name,type,pool_index,server`    |

          "expr": "sum by (bucket,api) (increase(minio_bucket_requests_4xx_errors_total{job=\"$scrape_jobs\"}[$__rate_interval]))",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{bucket,api}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeRegions": [],
      "title": "S3 API Request 4xx Error Rate",
      "tooltip": {
        "shared": true,

|:----------------------------------------------|:---------------------------------------------------------|
| `minio_s3_requests_4xx_errors_total`          | Total number S3 requests with (4xx) errors.              |
| `minio_s3_requests_5xx_errors_total`          | Total number S3 requests with (5xx) errors.              |

          "exemplar": true,
          "expr": "sum by (bucket,api) (increase(minio_bucket_requests_4xx_errors_total{job=\"$scrape_jobs\"}[$__rate_interval]))",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{bucket,api}}",
          "refId": "A"
        }
      ],
      "title": "S3 API Request 4xx Error Rate",
      "type": "timeseries"
    },
    {
      "datasource": {

		Help:      "Total number of S3 requests with (4xx and 5xx) errors",
		Type:      counterMetric,
	}
}

func getS3Requests4xxErrorsMD() MetricDescription {
	return MetricDescription{
		Namespace: s3MetricNamespace,
		Subsystem: requestsSubsystem,
		Name:      "4xx_" + errorsTotal,
		Help:      "Total number of S3 requests with (4xx) errors",
		Type:      counterMetric,
	}
}

          "exemplar": true,
          "expr": "sum by (server,api) (increase(minio_s3_requests_4xx_errors_total{job=~\"$scrape_jobs\"}[$__rate_interval]))",
          "interval": "1m",
          "intervalFactor": 2,
          "legendFormat": "{{server,api}}",
          "refId": "A"
        }
      ],
      "title": "S3 API Request Error Rate (4xx)",
      "type": "timeseries"
    },
    {
      "datasource": {