code: func CronLoader(b backend.B) caching.Loader {
  	return func(c context.Context, k caching.Key, v *caching.Value) (*caching.Value, error) {
  		return caching.CacheLoad(c, b, k, v)
  	}
  }
docs: // CronLoader returns a caching.Loader implementation to be used
  // by the Cron task.