disk cache management in the Thanos Store Gateway.

[Vidyasagar9390]

I have a question regarding disk cache management in the Thanos Store Gateway.

In our Thanos implementation, we use the thanos-store component, which caches index header files on disk using ULIDs (Universally Unique Lexicographically Sortable Identifiers) for block directories. Over time, this cache grows, and we’ve noticed that our disk usage has reached over 80%.

Is there a built-in flag or configuration option to automatically clean up old or unused cached index files from the disk?
We want to avoid manual deletion and are looking for an automated or configurable way to manage this cache size effectively.

Any guidance or best practices on managing disk cache for Thanos Store Gateway would be greatly appreciated.

Thanks in advance!

[Vidyasagar9390]