/** Number of calls to [TaskRunner.Backend.execute]. Guarded by [TaskRunner.lock]. */
  var executeCallCount = 0

  /** Guarded by [taskRunner]. */
  var nanoTime = 0L
    private set

  /** Backlog of tasks to run. Only one task runs at a time. Guarded by [TaskRunner.lock]. */
  private val serialTaskQueue = ArrayDeque<SerialTask>()

  /** The task that's currently executing. Guarded by [TaskRunner.lock]. */

	// for site replication - maintain stats at global level
	srStats *SRStats
	// active worker stats
	workers *ActiveWorkerStat
	// queue stats cache
	qCache queueCache

	pCache proxyStatsCache
	// mrf backlog stats
	mrfStats ReplicationMRFStats
	// for bucket replication, continue to use existing cache
	Cache             map[string]*BucketReplicationStats
	mostRecentStats   BucketStatsMap
	registry          metrics.Registry

	rx.sma.addSample(rx.Curr)
	rx.Avg = rx.sma.simpleMovingAvg()
	if rx.Curr > rx.Peak {
		rx.Peak = rx.Curr
	}
	rx.N++
}

// ReplicationMRFStats holds stats of MRF backlog saved to disk in the last 5 minutes
// and number of entries that failed replication after 3 retries
type ReplicationMRFStats struct {
	LastFailedCount uint64 `json:"failedCount_last5min"`

On the target bucket, `s3:PutObject` event shows `X-Amz-Replication-Status` status of `REPLICA` in the metadata. Additional metrics to monitor backlog state for the purpose of bandwidth management and resource allocation are exposed via Prometheus - see <https://github.com/minio/minio/blob/master/docs/metrics/prometheus/list.md> for more details.

### Sync/Async Replication

				return
			}
			w.(http.Flusher).Flush()
		case <-ctx.Done():
			return
		}
	}
}

// ReplicationMRFHandler - POST returns info on entries in the MRF backlog for a node or all nodes
func (a adminAPIHandlers) ReplicationMRFHandler(w http.ResponseWriter, r *http.Request) {
	ctx := r.Context()

	vars := mux.Vars(r)
	bucket := vars["bucket"]

| `minio_replication_recent_backlog_count`          | Total number of objects seen in replication backlog in the last 5 minutes <br><br>Type: gauge | `server` |
#### `/bucket/replication`

| `minio_node_replication_recent_backlog_count`           | Total number of objects seen in replication backlog in the last 5 minutes                                |

## Healing Metrics

| Name                                         | Description                                                      |

I was never able to use it in a full project, as it didn't have security integration, so, I couldn't replace all the features I was having with the full-stack generators based on Flask-apispec. I had in my backlog of projects to create a pull request adding that functionality.

But then, the project's focus shifted.

It was no longer an API web framework, as the creator needed to focus on Starlette.

Doch dann verlagerte sich der Schwerpunkt des Projekts.

Je n'ai jamais pu l'utiliser dans un projet complet, car il n'avait pas d'intégration de sécurité, et je ne pouvais donc pas remplacer toutes les fonctionnalités que j'avais avec les générateurs complets basés sur Flask-apispec. J'avais dans mon backlog de projets de créer une pull request pour ajouter cette fonctionnalité.

Mais ensuite, le projet a changé d'orientation.

Il ne s'agissait plus d'un framework web API, le créateur devant se concentrer sur Starlette.