https://www.drupal.org/project/s3fs/issues/2986407
s3fs-refresh-cache is not scalable [#2986407] | Drupal.org
Mar 31, 2021 - Well, our client's bucket has grown to at least 1M files, and drush s3fs-refresh-cache now dies (with PHP memory_limit set to 1G): Fatal error: Allowed memory...
refreshcachescalabledrupal