code: func refetchCRLPeriod(c context.Context) time.Duration {
  	if info.IsDevAppServer(c) {
  		return 100 * time.Millisecond
  	}
  	return RefetchCRLPeriod
  }
docs: // refetchCRLPeriod returns for how long to cache the CRL in memory by default.
  //
  // On dev server we cache for a very short duration to simplify local testing.