Transition tiers can be added to MinIO using `mc admin tier add` command to associate a `gcs`, `s3` or `azure` bucket or prefix path on a bucket to the tier name.
Lifecycle transition rules can be applied to buckets (both versioned and un-versioned) by specifying the tier name defined above as the transition storage class for the lifecycle rule.

## Implementation

	resolver := metadataResolutionParams{
		dirQuorum: listingQuorum,
		objQuorum: listingQuorum,
		bucket:    o.Bucket,
	}

	// Maximum versions requested for "latest" object
	// resolution on versioned buckets, this is to be only
	// used when o.Versioned is false
	if !o.Versioned {
		resolver.requestedVersions = 1
	}
	var limit int
	if o.Limit > 0 && o.StopDiskAtLimit {

 * under the License.
 */

/**
 * Defines the Service Provider Interface (SPI) for Maven extensions, allowing
 * third-party implementations to extend and customize Maven's core functionality
 * through a stable, versioned API.
 *
 * @since 4.0.0
 */

map:{
    ; REGISTER_DATETIME = sysdate
    ; REGISTER_USER     = foo
    ; REGISTER_PROCESS  = bar
    ; UPDATE_DATETIME   = sysdate
    ; UPDATE_USER       = foo
    ; UPDATE_PROCESS    = bar
    ; VERSION_NO        = 0
}

			if u.Object == "" {
				healBucket(u.Bucket, scan)
			} else {
				if len(u.Versions) > 0 {
					vers := len(u.Versions) / 16
					if vers > 0 {
						for i := range vers {
							healObject(u.Bucket, u.Object, uuid.UUID(u.Versions[16*i:]).String(), scan)
						}
					}
				} else {
					healObject(u.Bucket, u.Object, u.VersionID, scan)
				}
			}

			wait()
		}
	}

	if err != nil {
		err = msgp.WrapError(err, "Versions")
		return
	}
	if cap(z.Versions) >= int(zb0002) {
		z.Versions = (z.Versions)[:zb0002]
	} else {
		z.Versions = make([]FileInfo, zb0002)
	}
	for za0001 := range z.Versions {
		err = z.Versions[za0001].DecodeMsg(dc)
		if err != nil {
			err = msgp.WrapError(err, "Versions", za0001)
			return
		}
	}
	var zb0003 uint32

		AccessTier:  az.tier(), // set tier if specified
		Metadata:    azMeta,
	})
	if err != nil {
		return "", azureToObjectError(err, az.Bucket, az.getDest(object))
	}
	vid := ""
	if resp.VersionID != nil {
		vid = *resp.VersionID
	}
	return remoteVersionID(vid), nil
}

func (az *warmBackendAzure) Put(ctx context.Context, object string, r io.Reader, length int64) (remoteVersionID, error) {

    /**
     * Gets the unique identifier for this search log event.
     *
     * @return The event ID
     */
    String getId();

    /**
     * Gets the version number for this search log event.
     *
     * @return The version number, or null if not versioned
     */
    Long getVersionNo();

    /**
     * Converts this search log event to a source map for indexing or logging.
     *

 *
 */
@Deprecated
public interface GraphConflictResolver {
    String ROLE = GraphConflictResolver.class.getName();

    /**
     * Cleanses the supplied graph by leaving only one directed versioned edge\
     * between any two nodes, if multiple exists. Uses scope relationships, defined
     * in <code>ArtifactScopeEnum</code>
     *
     * @param graph the "dirty" graph to be simplified via conflict resolution

Aber sie erleichtert die Arbeit mit asynchronem Code erheblich.

Die gleiche Syntax (oder fast identisch) wurde kürzlich auch in moderne Versionen von JavaScript (im Browser und in NodeJS) aufgenommen.

Davor war der Umgang mit asynchronem Code jedoch deutlich komplexer und schwieriger.