The cache folder is currently used for caching of resized images with subfolders for other caches for tvdb, tmdb, rss feed attachments, etc.

These subfolders are not purged according to the cache size specified and so are free to grow indefinitely. I recently noticed that my rss cache folder was in excess of 50GB which I found to be due to rss feeds failing to be deleted from the database, leaving many files in the rss cache orphaned.

It would be useful for the Cache Settings page to show the size of these subfolders with options to purge them, and in the case of rss to remove any unreferenced files.