protected long cacheDuration = 10; // min

    @Resource
    public void init() {
        xpathAPICache =
                CacheBuilder.newBuilder().expireAfterAccess(cacheDuration, TimeUnit.MINUTES).build(new CacheLoader<String, XPathAPI>() {
                    @Override
                    public XPathAPI load(final String key) {
                        if (logger.isDebugEnabled()) {

  }

  /**
   * Returns the result of subtracting this and {@code val}. If the result would be negative,
   * returns the low 32 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedInteger minus(UnsignedInteger val) {
    return fromIntBits(value - checkNotNull(val).value);
  }

  /**
   * Returns the result of multiplying this and {@code val}. If the result would have more than 32

  }

  /**
   * Returns the result of subtracting this and {@code val}. If the result would be negative,
   * returns the low 32 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedInteger minus(UnsignedInteger val) {
    return fromIntBits(value - checkNotNull(val).value);
  }

  /**
   * Returns the result of multiplying this and {@code val}. If the result would have more than 32

```

If the error type is `*RemoteErr`, then the error was returned by the remote server. Otherwise it is a local error.

Context timeouts are propagated, and a default timeout of 1 minute is added if none is specified.

There is no cancellation propagation for single payload requests.
When the context is canceled, the request will return at once with an appropriate error. 

		w.WriteHeader(499)
	default:
		w.WriteHeader(http.StatusForbidden)
	}
	w.Write([]byte(err.Error()))
}

// DefaultSkewTime - skew time is 15 minutes between minio peers.
const DefaultSkewTime = 15 * time.Minute

// validateStorageRequestToken will validate the token against the provided audience.
func validateStorageRequestToken(token string) error {
	claims := xjwt.NewStandardClaims()

  /**
   * Returns the result of subtracting this and {@code val}. If the result would have more than 64
   * bits, returns the low 64 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedLong minus(UnsignedLong val) {
    return fromLongBits(this.value - checkNotNull(val).value);
  }

  /**
   * Returns the result of multiplying this and {@code val}. If the result would have more than 64

  /**
   * Returns the result of subtracting this and {@code val}. If the result would have more than 64
   * bits, returns the low 64 bits of the result.
   *
   * @since 14.0
   */
  public UnsignedLong minus(UnsignedLong val) {
    return fromLongBits(this.value - checkNotNull(val).value);
  }

  /**
   * Returns the result of multiplying this and {@code val}. If the result would have more than 64

		roi.EventType = ReplicateExisting
		globalReplicationPool.Get().queueReplicaTask(roi)
	}
	return
}

const (
	mrfSaveInterval  = 5 * time.Minute
	mrfQueueInterval = mrfSaveInterval + time.Minute // A minute higher than save interval

	mrfRetryLimit = 3 // max number of retries before letting scanner catch up on this object version
	mrfMaxEntries = 1000000
)

	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"`

	sconfig.Net.DialTimeout = (10 * time.Second)
	sconfig.Net.WriteTimeout = (10 * time.Second)
	sconfig.Metadata.Retry.Max = 1
	sconfig.Metadata.Retry.Backoff = (10 * time.Second)
	sconfig.Metadata.RefreshFrequency = (15 * time.Minute)

	h.config = sconfig

	var brokers []string
	for _, broker := range h.kconfig.Brokers {
		brokers = append(brokers, broker.String())
	}

	client, err := sarama.NewClient(brokers, sconfig)