### 3.1 Automatic removal of non current objects versions

A non-current object version is a version which is not the latest for a given object. It is possible to set up an automatic removal of non-current versions when a version becomes older than a given number of days.

e.g., To scan objects stored under `user-uploads/` prefix and remove versions older than one year.

```
{
    "Rules": [

    // other operations, the cache and the removal queue won't change from this point on.

    // Verify that each received removal notification was valid
    for (RemovalNotification<String, String> notification : removalListener) {
      assertEquals("Invalid removal notification", notification.getKey(), notification.getValue());
    }

    CacheStats stats = cache.stats();

    // other operations, the cache and the removal queue won't change from this point on.

    // Verify that each received removal notification was valid
    for (RemovalNotification<String, String> notification : removalListener) {
      assertEquals("Invalid removal notification", notification.getKey(), notification.getValue());
    }

    CacheStats stats = cache.stats();

			[]byte(";chunk-signature="),
			nil,
			nil,
		},
		// Test - 4 removes trailing slash.
		{
			[]byte("10000;chunk-signature=ad80c730a21e5b8d04586a2213dd63b9a0e99e0e2307b0ade35a65485a288648    \t \n"),
			[]byte("10000"),
			[]byte("ad80c730a21e5b8d04586a2213dd63b9a0e99e0e2307b0ade35a65485a288648"),
		},
	}
	// Validate chunk extension removal.
	for i, tt := range tests {

        // Test forward slash normalization
        assertEquals("\\share\\folder", validator.validatePath("/share/folder"));

        // Test duplicate slash removal
        assertEquals("\\share\\folder", validator.validatePath("\\\\share\\\\folder"));

        // Test trailing slash removal
        assertEquals("\\share\\folder", validator.validatePath("\\share\\folder\\"));
    }

    @Test

      boolean removal = (maximumSize == UNSET_INT) ? false : (size() > maximumSize);
      if ((removalListener != null) && removal) {
        removalListener.onRemoval(
            RemovalNotification.create(
                ignored.getKey(), ignored.getValue().getValue(), RemovalCause.SIZE));
      }
      statsCounter.recordEviction();
      return removal;
    }
  }

  /**

		},
		{
			meta:           nmeta2,
			pools:          reducedPools,
			name:           "Invalid-Decom-Pending-Pool-Removal",
			expectedErr:    false,
			expectedUpdate: true,
		},
		{
			meta:           nmeta1,
			pools:          reducedPools,
			name:           "Correct-Decom-Pool-Removed",
			expectedErr:    false,
			expectedUpdate: true,
		},
		{

     */
    SHARE_MOVE(3),

    /**
     * IP address changed - network configuration change
     */
    IP_CHANGE(4),

    /**
     * Share deleted - share removal notification
     */
    SHARE_DELETE(5),

    /**
     * Cluster node unavailable - node down event
     */
    NODE_UNAVAILABLE(6),

    /**
     * Cluster node available - node up event
     */

### Expiry or removal events

An object that is in transition tier will be deleted once the object hits expiry date or if removed via `mc rm` (`mc rm --vid` in the case of delete of a specific object version). Other rules specific to legal hold and object locking precede any lifecycle rules.

        return fessConfig.getCrawlerDocumentMaxSymbolTermSizeAsInteger();
    }

    /**
     * Checks if duplicate term removal is enabled in configuration.
     *
     * @return true if duplicate terms should be removed, false otherwise
     */
    protected boolean isDuplicateTermRemoved() {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();