For regulatory purposes, we must follow record retention requirements. This means we must delete code reviews older than 5 years old (note: this period of time may vary from company to company or i...
The solution to this ideally would also account for users who don't necessarily want to delete the review records, but just the content cache for reviews > X days/months/years (see this feature request).
So possibly the solution for this would provide the user the option to delete the review records, the content cache, or both for completed reviews of a certain age.