proxiedGetRequestsTotal             MetricName = "proxied_get_requests_total"
	proxiedHeadRequestsTotal            MetricName = "proxied_head_requests_total"
	proxiedPutTaggingRequestsTotal      MetricName = "proxied_put_tagging_requests_total"
	proxiedGetTaggingRequestsTotal      MetricName = "proxied_get_tagging_requests_total"
	proxiedDeleteTaggingRequestsTotal   MetricName = "proxied_delete_tagging_requests_total"

		config.HelpKV{
			Key:         apiRequestsMax,
			Description: `set the maximum number of concurrent requests` + defaultHelpPostfix(apiRequestsMax),
			Optional:    true,
			Type:        "number",
		},
		config.HelpKV{
			Key:         apiRequestsDeadline,
			Description: `set the deadline for API requests waiting to be processed` + defaultHelpPostfix(apiRequestsDeadline),
			Optional:    true,
			Type:        "duration",
		},

			Name:    "s3_ttfb_seconds",
			Help:    "Time taken by requests served by current MinIO server instance",
			Buckets: []float64{.05, .1, .25, .5, 1, 2.5, 5, 10},
		},
		[]string{"api"},
	)
	bucketHTTPRequestsDuration = prometheus.NewHistogramVec(
		prometheus.HistogramOpts{
			Name:    "s3_ttfb_seconds",
			Help:    "Time taken by requests served by current MinIO server instance per bucket",

			Claims:          cred.Claims,
		}) {
			// Request is allowed return the appropriate access key.
			return ErrNone
		}
	}

	return ErrAccessDenied
}

// Check request auth type verifies the incoming http request
//   - validates the request signature
//   - validates the policy action if anonymous tests bucket policies if any,
//     for authenticated requests validates IAM policies.
//

	}

	var (
		defaultSha256Cksum string
		v                  []string
		ok                 bool
	)

	// For a presigned request we look at the query param for sha256.
	if isRequestPresignedSignatureV4(r) {
		// X-Amz-Content-Sha256, if not set in presigned requests, checksum
		// will default to 'UNSIGNED-PAYLOAD'.
		defaultSha256Cksum = unsignedPayload
		v, ok = r.Form[xhttp.AmzContentSha256]
		if !ok {

			Optional:    true,
			Type:        "duration",
		},
		config.HelpKV{
			Key:         IOCount,
			Description: `maximum IO requests allowed between objects to slow down heal operation` + defaultHelpPostfix(IOCount),
			Optional:    true,
			Type:        "int",
		},
		config.HelpKV{
			Key:         DriveWorkers,

		Description:    "Request has expired",
		HTTPStatusCode: http.StatusForbidden,
	},
	ErrRequestNotReadyYet: {
		Code:           "AccessDenied",
		Description:    "Request is not valid yet",
		HTTPStatusCode: http.StatusForbidden,
	},
	ErrSlowDownRead: {
		Code:           "SlowDownRead",
		Description:    "Resource requested is unreadable, please reduce your request rate",

	// TLDR..
	// Not used anymore xl.meta captures the right blockSize
	// so blockSizeV2 should be used for all future purposes.
	// this value is kept here to calculate the max API
	// requests based on RAM size for existing content.
	blockSizeV1 = 10 * humanize.MiByte

	// Block size used in erasure coding version 2.
	blockSizeV2 = 1 * humanize.MiByte

	// Buckets meta prefix.
	bucketMetaPrefix = "buckets"

	"github.com/minio/minio/internal/pubsub"
)

// TraceParamsKey allows to pass trace parameters to the request via context.
// This is only needed when un-typed requests are used.
// MSS, map[string]string types are preferred, but any struct with exported fields will work.
type TraceParamsKey struct{}

// traceRequests adds request tracing to the connection.
func (c *Connection) traceRequests(p *pubsub.PubSub[madmin.TraceInfo, madmin.TraceType]) {

			r := RemoteErr(err.Error())
			return nil, &r
		}
		return payload, nil
	}, subroute...)
}

// Requester is able to send requests to a remote.
type Requester interface {
	Request(ctx context.Context, h HandlerID, req []byte) ([]byte, error)
}

// Call the remote with the request and return the response.
// The response should be returned with PutResponse when no error.