throttle, ok := m.bucketsThrottle[BucketOptions{Name: bucket, ReplicationARN: arn}]
	if !ok {
		throttle = &bucketThrottle{}
	}
	throttle.NodeBandwidthPerSec = limitBytes
	throttle.Limiter = rate.NewLimiter(rate.Limit(float64(limitBytes)), int(limitBytes))
	m.bucketsThrottle[BucketOptions{Name: bucket, ReplicationARN: arn}] = throttle
}

// IsThrottled returns true if a bucket has bandwidth throttling enabled.