The client interface in CAStor consists of:
policy.lifecyclesettingPolicy-Lifecycleheader on a domainPolicy-Lifecycleheaders on a bucket.
The evaluated policies are returned via Policy-Lifecycle-Evaluated headers on domains, buckets, and objects using GET/HEAD requests. For named objects, the verbose query argument is required to see those headers. The gateway supports S3 lifecycle policies as described in the S3 documentation.
UIS supports the above cluster setting just like any existing cluster setting. Domain and bucket policy fields are edited along with other context-level policies using similar interface idioms.