# Bucket Versioning Design Guide [![Slack](https://slack.min.io/slack?type=svg)](https://slack.min.io) [![Docker Pulls](https://img.shields.io/docker/pulls/minio/minio.svg?maxAge=604800)](https://hub.docker.com/r/minio/minio/)

## Description of `xl.meta`

`xl.meta` is a new self describing backend format used by MinIO to support AWS S3 compatible versioning.
This file is the source of truth for each `version` at rest. `xl.meta` is a msgpack file serialized from a

The JSON body structure can be seen from this sample:

<details><summary>Request Body Sample</summary>

```json
{
  "input": {
    "account": "minio",
    "groups": null,
    "action": "s3:ListBucket",
    "bucket": "test",
    "conditions": {
      "Authorization": [

	}{
		// Cases which should pass the test.
		// passing in valid bucket names.
		{"lol", true},
		{"1-this-is-valid", true},
		{"1-this-too-is-valid-1", true},
		{"this.works.too.1", true},
		{"1234567", true},
		{"123", true},
		{"s3-eu-west-1.amazonaws.com", true},
		{"ideas-are-more-powerful-than-guns", true},
		{"testbucket", true},
		{"1bucket", true},
		{"bucket1", true},
		{"$this-is-not-valid-too", true},

}

// Represents the V2 backend disk structure version
// under `.minio.sys` and actual data namespace.
// formatErasureV2 - structure holds format config version '2'.
// The V2 format to support "large bucket" support where a bucket
// can span multiple erasure sets.
type formatErasureV2 struct {
	formatMetaV1
	Erasure struct {
		Version string `json:"version"` // Version of 'xl' format.

                description =
                    "Flame graphs with $profiler for ${performanceScenario.scenario.scenario} | ${performanceScenario.testProject} " +
                        "on ${os.asName()} (bucket $bucketIndex)",
                performanceSubProject = "performance",
                bucketIndex = bucketIndex,
                extraParameters =

}

// Add latency t from object with the specified size.
func (l *LastMinuteHistogram) Add(size int64, t time.Duration) {
	l[sizeToTag(size)].add(t)
}

// GetAvgData will return the average for each bucket from the last time minute.
// The number of objects is also included.
func (l *LastMinuteHistogram) GetAvgData() [sizeLastElemMarker]AccElem {
	var res [sizeLastElemMarker]AccElem
	for i, elem := range l[:] {

	return quick.LoadConfig(configFile, globalEtcdClient, data)
}

func readConfigWithoutMigrate(ctx context.Context, objAPI ObjectLayer) (config.Config, error) {
	// Construct path to config.json for the given bucket.
	configFile := path.Join(minioConfigPrefix, minioConfigFile)

	configFiles := []string{
		getConfigFile(),
		getConfigFile() + ".deprecated",
		configFile,
	}

	newServerCfg := func() (config.Config, error) {

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"slices"
	"sort"
	"testing"
	"time"

	"github.com/minio/minio/internal/bucket/lifecycle"
	xhttp "github.com/minio/minio/internal/http"
)

func Test_hashDeterministicString(t *testing.T) {
	tests := []struct {
		name string
		arg  map[string]string
	}{
		{
			name: "zero",

			Key:         KafkaBrokers,
			Description: "comma separated list of Kafka broker addresses",
			Type:        "csv",
		},
		config.HelpKV{
			Key:         KafkaTopic,
			Description: "Kafka topic used for bucket notifications",
			Optional:    true,
			Type:        "string",
		},
		config.HelpKV{
			Key:         KafkaSASLUsername,
			Description: "username for SASL/PLAIN or SASL/SCRAM authentication",

    HTTP client adapter. (thanks kwuollett)
 *  Work around the Alcatel `getByInetAddress` bug (thanks k.kocel)
 *  Be more aggressive about testing pooled sockets before reuse. (thanks
    warpspin)
 *  Include `Content-Type` and `Content-Encoding` in the Apache HTTP client
    adapter. (thanks kwuollett)
 *  Add a media type class to OkHttp.
 *  Change custom header prefix: