Example: Limit a MinIO cluster to accept at max 1600 simultaneous S3 API requests across all nodes of the cluster.

```sh
export MINIO_API_REQUESTS_MAX=1600
export MINIO_ROOT_USER=your-access-key
export MINIO_ROOT_PASSWORD=your-secret-key
minio server http://server{1...8}/mnt/hdd{1...16}
```

or

```sh
mc admin config set myminio/ api requests_max=1600
mc admin service restart myminio/
```

and pauses up to '250ms' per object when the system has `max_io` number of concurrent requests. It is possible to adjust the `max_sleep` and `max_io` values thereby increasing the healing speed. The delays between each operation of the healer can be adjusted by the `mc admin config set alias/ heal max_sleep=1s` and maximum concurrent requests allowed before we start slowing things down can be configured with `mc admin config set alias/ heal max_io=30` . By default the wait delay is `250ms` beyond 100...

          },
          "exemplar": true,
          "expr": "minio_cluster_replication_max_active_workers{job=\"$scrape_jobs\"}",
          "interval": "1m",
          "legendFormat": "{{server}}",
          "refId": "A"
        }
      ],
      "thresholds": [],
      "timeRegions": [],
      "title": "Max Active Workers",
      "tooltip": {
        "shared": true,
        "sort": 0,

            "uid": "${DS_PROMETHEUS}"
          },
          "exemplar": true,
          "expr": "minio_cluster_replication_max_active_workers{job=\"$scrape_jobs\"}",
          "interval": "1m",
          "legendFormat": "{{server}}",
          "refId": "A"
        }
      ],
      "title": "Max Active Workers",
      "type": "timeseries"
    },
    {
      "datasource": {
        "type": "prometheus",

	// TLDR..
	// Not used anymore xl.meta captures the right blockSize
	// so blockSizeV2 should be used for all future purposes.
	// this value is kept here to calculate the max API
	// requests based on RAM size for existing content.
	blockSizeV1 = 10 * humanize.MiByte

	// Block size used in erasure coding version 2.
	blockSizeV2 = 1 * humanize.MiByte

	// Buckets meta prefix.

test-iam: build ## verify IAM (external IDP, etcd backends)
	@echo "Running tests for IAM (external IDP, etcd backends)"
	@MINIO_API_REQUESTS_MAX=10000 CGO_ENABLED=0 go test -tags kqueue -v -run TestIAM* ./cmd
	@echo "Running tests for IAM (external IDP, etcd backends) with -race"
	@MINIO_API_REQUESTS_MAX=10000 GORACE=history_size=7 CGO_ENABLED=1 go test -race -tags kqueue -v -run TestIAM* ./cmd

			Optional:    true,
			Type:        "boolean",
		},
		config.HelpKV{
			Key:         apiObjectMaxVersions,
			Description: "set max allowed number of versions per object" + defaultHelpPostfix(apiObjectMaxVersions),
			Optional:    true,
			Type:        "number",
		},
	}

	// These settings are needed to ensure that kafka client doesn't hang on brokers
	// refer https://github.com/IBM/sarama/issues/765#issuecomment-254333355
	config.Producer.Retry.Max = 2
	config.Producer.Retry.Backoff = (1 * time.Second)
	config.Producer.Return.Successes = true
	config.Producer.Return.Errors = true
	config.Producer.RequiredAcks = 1
	config.Producer.Timeout = (5 * time.Second)

	NATSStreaming                   = "streaming"
	NATSStreamingClusterID          = "streaming_cluster_id"
	NATSStreamingAsync              = "streaming_async"
	NATSStreamingMaxPubAcksInFlight = "streaming_max_pub_acks_in_flight"

	// JetStream constants
	NATSJetStream = "jetstream"

	EnvNATSEnable        = "MINIO_NOTIFY_NATS_ENABLE"
	EnvNATSAddress       = "MINIO_NOTIFY_NATS_ADDRESS"

				avgQueueCount.Value = qt.Avg.Count
				maxQueueBytes.Value = qt.Max.Bytes
				maxQueueCount.Value = qt.Max.Count
			}
			activeWorkersCount.Value = float64(qs.ActiveWorkers.Curr)
			avgActiveWorkersCount.Value = float64(qs.ActiveWorkers.Avg)
			maxActiveWorkersCount.Value = float64(qs.ActiveWorkers.Max)

			if len(qs.XferStats) > 0 {
				tots := qs.XferStats[Total]