code: func settingsUpdater(c context.Context) {
  	for {
  		set := coordinator.GetSettings(c)
  		logging.Debugf(c, "updating settings: %v", set)
  		if batchSize != set.ArchivistBatchSize {
  			batchSize = set.ArchivistBatchSize
  		}
  		if leaseTime != set.ArchivistLeaseTime {
  			leaseTime = set.ArchivistLeaseTime
  		}
  		clock.Sleep(c, 5*time.Minute)
  	}
  }
docs: // settingsUpdater updates the settings from datastore every once in a while.