private volatile boolean shutdownInProgress = false;

    // Configuration
    private long maxResourceAge = TimeUnit.HOURS.toMillis(1); // 1 hour default
    private long cleanupInterval = TimeUnit.MINUTES.toMillis(5); // 5 minutes default
    private boolean leakDetectionEnabled = true;
    private boolean autoCleanupEnabled = true;

    /**
     * Resource holder that tracks resource lifecycle
     */

	}
	if len(l.lockUID) != len(rResources)+len(wResources) {
		t.Fatalf("lockUID len, got %d, want %d + %d", len(l.lockUID), len(rResources), len(wResources))
	}

	// Expire a minute ago.
	l.expireOldLocks(-time.Minute)
	if len(l.lockMap) != 0 {
		t.Fatalf("after cleanup should be empty, got %d", len(l.lockMap))
	}
	if len(l.lockUID) != 0 {
		t.Fatalf("lockUID len, got %d, want %d", len(l.lockUID), 0)
	}
}

    /**
     * Timeout in milliseconds for witness heartbeat messages
     */
    protected long witnessHeartbeatTimeout = 120000; // 2 minutes
    /**
     * Timeout in milliseconds for witness registration
     */
    protected long witnessRegistrationTimeout = 300000; // 5 minutes
    /**
     * Delay in milliseconds before attempting witness reconnection
     */
    protected long witnessReconnectDelay = 1000; // 1 second

	currentPaths sync.Map

	cycleInfoMu sync.Mutex
	cycleInfo   *currentScannerCycle
}

var globalScannerMetrics scannerMetrics

const (
	// START Realtime metrics, that only to records
	// last minute latencies and total operation count.
	scannerMetricReadMetadata scannerMetric = iota
	scannerMetricCheckMissing
	scannerMetricSaveUsage
	scannerMetricApplyAll
	scannerMetricApplyVersion
	scannerMetricTierObjSweep

		Type:      gaugeMetric,
	}
}

func getRepFailedOperationsLastMinuteMD(namespace MetricNamespace) MetricDescription {
	return MetricDescription{
		Namespace: namespace,
		Subsystem: replicationSubsystem,
		Name:      lastMinFailedCount,
		Help:      "Total number of objects which failed replication in the last full minute",
		Type:      gaugeMetric,
	}
}

		"Total number of bytes failed at least once to replicate in the last full minute on a bucket",
		bucketL, targetArnL)
	bucketReplLastMinFailedCountMD = NewGaugeMD(bucketReplLastMinFailedCount,
		"Total number of objects which failed replication in the last full minute on a bucket",
		bucketL, targetArnL)
	bucketReplLatencyMsMD = NewGaugeMD(bucketReplLatencyMs,

    public static final int SMB2_DHANDLE_FLAG_PERSISTENT = 0x00000002;
    
    // Timeout values (milliseconds)
    public static final long DEFAULT_DURABLE_TIMEOUT = 120000;  // 2 minutes
    public static final long MAX_DURABLE_TIMEOUT = 300000;      // 5 minutes
    public static final long PERSISTENT_TIMEOUT = 0;            // Infinite for persistent
}
```

## 4. Data Structures

### 4.1 Handle GUID Structure
```java

E24HH4nNMcgY5taynaPfxu  replicate       minioadmin      1 minute ago
```

### List all 'replicate' batch jobs
```
mc batch list alias/ --type replicate
ID                      TYPE            USER            STARTED
E24HH4nNMcgY5taynaPfxu  replicate       minioadmin      1 minute ago
```

### Real-time 'status' for a batch job
```

    Cache<Integer, Integer> cache =
        CacheBuilder.newBuilder()
            .expireAfterAccess(1, MINUTES)
            .removalListener(listener)
            .ticker(ticker)
            .build();
    cache.put(1, 1);
    ticker.advance(10, MINUTES);
    cache.invalidateAll();

    assertThat(listener.poll().getCause()).isEqualTo(RemovalCause.EXPIRED);
  }

     * Maximum raw buffer size for raw read/write operations.
     */
    public int maxRawSize;
    /**
     * Server's system time.
     */
    public long serverTime;
    /**
     * Server's time zone offset in minutes from UTC.
     */
    public int serverTimeZone;
    /**
     * Length of the encryption key.
     */
    public int encryptionKeyLength;
    /**
     * Encryption key for password encryption.
     */