now := time.Now()
	l.forwardTo(now)

	nowIdx := now.Hour()
	l.Bins[nowIdx] = l.Bins[nowIdx].add(ts)
}

// forwardTo moves time to t, clearing entries between last update and t.
func (l *lastDayTierStats) forwardTo(t time.Time) {
	if t.IsZero() {
		t = time.Now()
	}

	since := t.Sub(l.UpdatedAt).Hours()
	// within the hour since l.UpdatedAt
	if since < 1 {
		return
	}

package dsync

import (
	"math/rand"
	"time"
)

func backoffWait(min, unit, cap time.Duration) func(*rand.Rand, uint) time.Duration {
	if unit > time.Hour {
		// Protect against integer overflow
		panic("unit cannot exceed one hour")
	}
	return func(r *rand.Rand, attempt uint) time.Duration {
		sleep := min
		sleep += unit * time.Duration(attempt)
		if sleep > cap {
			sleep = cap
		}

package cmd

import (
	"context"
	"fmt"
	"math/rand"
	"time"

	"github.com/tidwall/gjson"
)

const (
	licUpdateCycle = 24 * time.Hour * 30
	licRenewPath   = "/api/cluster/renew-license"
)

// initlicenseUpdateJob start the periodic license update job in the background.
func initLicenseUpdateJob(ctx context.Context, objAPI ObjectLayer) {
	go func() {

	obj := ObjectInfo{
		Name:        "foo",
		ModTime:     time.Now().Add(-31 * 24 * time.Hour),
		Size:        100 << 20,
		VersionID:   uuid.New().String(),
		IsLatest:    true,
		NumVersions: 4,
	}
	delMarker := ObjectInfo{
		Name:         "foo-deleted",
		ModTime:      time.Now().Add(-61 * 24 * time.Hour),
		Size:         0,
		VersionID:    uuid.New().String(),
		IsLatest:     true,

		"coalesce(s.id[1], 2, 2 + 3)",

		"cast(s as string)",
		"cast(s AS INT)",
		"cast(s as DECIMAL)",
		"extract(YEAR from '2018-01-09')",
		"extract(month from '2018-01-09')",

		"extract(hour from '2018-01-09')",
		"extract(day from '2018-01-09')",
		"substring('abcd' from 2 for 2)",
		"substring('abcd' from 2)",
		"substring('abcd' , 2 , 2)",

		"substring('abcd' , 22 )",
		"trim('  aab  ')",

	// tmp directory are deemed stale.
	GlobalStaleUploadsExpiry = time.Hour * 24 // 24 hrs.

	// GlobalStaleUploadsCleanupInterval - Cleanup interval when the stale uploads cleanup is initiated.
	GlobalStaleUploadsCleanupInterval = time.Hour * 6 // 6 hrs.

	// Refresh interval to update in-memory iam config cache.
	globalRefreshIAMInterval = 10 * time.Minute

func GetDefaultExpiration(dsecs string) (time.Duration, error) {
	timeout := env.Get(config.EnvMinioStsDuration, "")
	defaultExpiryDuration, err := time.ParseDuration(timeout)
	if err != nil {
		defaultExpiryDuration = time.Hour
	}
	if timeout == "" && dsecs != "" {
		expirySecs, err := strconv.ParseInt(dsecs, 10, 64)
		if err != nil {
			return 0, auth.ErrInvalidDuration
		}

		// The duration, in seconds, of the role session.

	lastMinFailedCount  MetricName = "last_minute_failed_count"
	lastMinFailedBytes  MetricName = "last_minute_failed_bytes"
	lastHourFailedCount MetricName = "last_hour_failed_count"
	lastHourFailedBytes MetricName = "last_hour_failed_bytes"
	totalFailedCount    MetricName = "total_failed_count"
	totalFailedBytes    MetricName = "total_failed_bytes"

	currActiveWorkers  MetricName = "current_active_workers"

By default, the temporary security credentials created by AssumeRoleWithWebIdentity last for one hour. However, the optional DurationSeconds parameter can be used to specify the validity duration of the generated credentials. This value varies from 900 seconds (15 minutes) up to the maximum session duration of 365 days.

		{1 * time.Hour, "my_download_url", "1 hour before the latest release"},
		{61 * time.Minute, "my_download_url", "1 hour before the latest release"},
		{122 * time.Minute, "my_download_url", "2 hours before the latest release"},
		{24 * time.Hour, "my_download_url", "1 day before the latest release"},
		{25 * time.Hour, "my_download_url", "1 day before the latest release"},