### Step 1: Ensure postgresql minimum requirements are met

MinIO requires PostgreSQL version 9.5 or above. MinIO uses the [`INSERT ON CONFLICT`](https://www.postgresql.org/docs/9.5/static/sql-insert.html#SQL-ON-CONFLICT) (aka UPSERT) feature, introduced in version 9.5 and the [JSONB](https://www.postgresql.org/docs/9.4/static/datatype-json.html) data-type introduced in version 9.4.

### Step 2: Add PostgreSQL endpoint to MinIO

	c.Helper()
	versions := []string{}
	for range 5 {
		ui, err := client.PutObject(ctx, bucket, "some-object", bytes.NewBuffer([]byte("stuff")), 5, minio.PutObjectOptions{})
		if err != nil {
			c.Fatalf("upload did not succeed got %#v", err)
		}
		versions = append(versions, ui.VersionID)
	}
	return versions
}

		}
	default:
		return Errorf("unsupported Versioning status %s", v.Status)
	}
	return nil
}

// Enabled - returns true if versioning is enabled
func (v Versioning) Enabled() bool {
	return v.Status == Enabled
}

// Versioned returns if 'prefix' has versioning enabled or suspended.
func (v Versioning) Versioned(prefix string) bool {
	return v.PrefixEnabled(prefix) || v.PrefixSuspended(prefix)
}

    public ResolutionNode resolveConflict(ResolutionNode node1, ResolutionNode node2) {
        try {
            ArtifactVersion version1 = node1.getArtifact().getSelectedVersion();
            ArtifactVersion version2 = node2.getArtifact().getSelectedVersion();

            return version1.compareTo(version2) <= 0 ? node1 : node2;
        } catch (OverConstrainedVersionException exception) {
            // TODO log message or throw exception?

## Verfügbare Versionen { #available-versions }

Die verfügbaren Versionen können Sie in den [Versionshinweisen](../release-notes.md){.internal-link target=_blank} einsehen (z. B. um zu überprüfen, welches die neueste Version ist).

## Über Versionen { #about-versions }

func (sys *BucketVersioningSys) Get(bucket string) (*versioning.Versioning, error) {
	if bucket == minioMetaBucket || strings.HasPrefix(bucket, minioMetaBucket) {
		return &versioning.Versioning{XMLNS: "http://s3.amazonaws.com/doc/2006-03-01/"}, nil
	}

	vcfg, _, err := globalBucketMetadataSys.GetVersioningConfig(bucket)
	return vcfg, err
}

// NewBucketVersioningSys - creates new versioning system.

	humanize "github.com/dustin/go-humanize"
	"github.com/minio/madmin-go/v3"
	"github.com/minio/minio/internal/bucket/versioning"
	"github.com/minio/minio/internal/logger"
	"github.com/minio/mux"
	"github.com/minio/pkg/v3/policy"
)

const (
	bucketVersioningConfig = "versioning.xml"

	// Maximum size of bucket versioning configuration payload sent to the PutBucketVersioningHandler.
	maxBucketVersioningConfigSize = 1 * humanize.MiByte
)

./mc mb -l myminio/versioned
./mc mb -l myminio/versioned-1

./mc encrypt set sse-s3 myminio/versioned
./mc encrypt set sse-kms minio-default-key myminio/versioned-1

./mc mirror internal myminio/versioned/ --quiet >/dev/null
./mc mirror internal myminio/versioned-1/ --quiet >/dev/null

## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null

./mc admin policy attach myminio/ lake --user=minio12345

./mc mb -l myminio/versioned

./mc encrypt set sse-s3 myminio/versioned

./mc mirror internal myminio/versioned/ --quiet >/dev/null

## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null

## mirror again to create another set of version on top
./mc mirror internal myminio/versioned/ --quiet >/dev/null

	exit 1
fi

./mc version info myminio/versioned | grep -q "versioning is enabled"
ret=$?
if [ $ret -ne 0 ]; then
	echo "expected versioning enabled after expansion"
	exit 1
fi

./mc mirror cmd myminio/versioned/ --quiet >/dev/null

./mc ls -r myminio/versioned/ >expanded_ns.txt
./mc ls -r --versions myminio/versioned/ >expanded_ns_versions.txt