Author: Klaus Post <******@****.***>
Date:   Thu Nov 18 12:15:22 2021 -0800

    Improve performance on multiple versions (#13573)
```

- A fix must be a valid fix that was reproduced and seen in a customer environment, for example.

```
commit 886262e58af77ebc7c836ef587c08544e9a0c271
Author: Harshavardhana <******@****.***>
Date:   Wed Nov 17 15:49:12 2021 -0800

```sh
aws s3api put-object --bucket testbucket --key lockme --object-lock-mode GOVERNANCE --object-lock-retain-until-date "2019-11-20"  --body /etc/issue
```

Accept-Ranges: bytes
Content-Length: 0
Server: MinIO
Vary: Origin
X-Amz-Bucket-Region: us-east-1
X-Minio-Write-Quorum: 3
X-Amz-Request-Id: 16239D6AB80EBECF
X-Xss-Protection: 1; mode=block
Date: Tue, 21 Jul 2020 00:36:14 GMT
```

### Cluster-readable probe

The reply is '200 OK' if cluster has read quorum if not it returns '503 Service Unavailable'.

```
curl http://minio1:9001/minio/health/cluster/read

```
...
        "MetaUsr": {
         "X-Amz-Restore-Expiry-Days": "4",
          "X-Amz-Restore-Request-Date": "Mon, 22 Feb 2021 21:10:09 GMT",
          "x-amz-restore": "ongoing-request=false, expiry-date=Sat, 27 Feb 2021 00:00:00 GMT",
...
```

### Encrypted/Object locked objects

	filter:
	  newerThan: "7d" # match objects newer than this value (e.g. 7d10h31s)
	  olderThan: "7d" # match objects older than this value (e.g. 7d10h31s)
	  createdAfter: "date" # match objects created after "date"
	  createdBefore: "date" # match objects created before "date"

	  ## NOTE: tags are not supported when "source" is remote.
	  # tags:
	  #   - key: "name"

- Create a bucket lifecycle configuration which expires the objects under the prefix `old/` on `2020-01-01T00:00:00.000Z` date and the objects under `temp/` after 7 days.
- Enable bucket lifecycle configuration using `mc`:

```sh
$ mc ilm import play/testbucket <<EOF
{
    "Rules": [
        {
            "Expiration": {
                "Date": "2020-01-01T00:00:00.000Z"
            },
            "ID": "OldPictures",
            "Filter": {

	}
  ]
}
```

#### Common information available in all requests

- `aws:CurrentTime` - This can be used for conditions that check the date and time.
- `aws:EpochTime` - This is the date in epoch or Unix time, for use with date/time conditions.
- `aws:PrincipalType` - This value indicates whether the principal is an account (Root credential), user (MinIO user), or assumed role (STS)

| `minio_cluster_replication_current_transfer_rate`          | Current replication transfer rate in bytes/sec                                                           |
| `minio_cluster_replication_average_transfer_rate`          | Average replication transfer rate in bytes/sec                                                           |

    "action": "s3:ListBucket",
    "bucket": "test",
    "conditions": {
      "Authorization": [
        "AWS4-HMAC-SHA256 Credential=minio/20220507/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=62012db6c47d697620cf6c68f0f45f6e34894589a53ab1faf6dc94338468c78a"
      ],
      "CurrentTime": [
        "2022-05-07T18:31:41Z"
      ],
      "Delimiter": [
        "/"
      ],
      "EpochTime": [

└─────┴─────────────────────────────────┴──────────────────────────────────┴────────┘
```

### Decommissioning status

```
λ mc admin decommission status alias/ http://minio{1...2}/data{1...4}
Decommissioning rate at 36 MiB/sec [4 TiB/50 TiB]
Started: 1 minute ago
```

Once it is **Complete**

```
λ mc admin decommission status alias/ http://minio{1...2}/data{1...4}