Recalculate caching value

[imcvampire]

Is your feature request related to a problem? Please describe. I enable caching feature after my app already runs on production for some time. Because of that, the caching value doesn't reflect the true number

Describe the solution you'd like A method/rake task to recalculate all caching values

[jonhue]

I don't think I'll have the capacity to work on this in the near future, but I'm happy to review pull requests 🙂

[Willardgmoore]

This can be done easily with a pk sequence update. I can add that info here when I am back at the computer.