Question

In brief i’m writing a plugin for a Rails app and I want to cache the data the plugin generates, however I want the ability to delete the cached items should I need to do so.

e.g.

Rails.cache.write("data_1", "the data")
Rails.cache.write("data_2", "the data")
Rails.cache.write("data_3", "the data")

What should I be calling to fetch all keys that match the regex /^data_/ so I can delete them?

I tried:

Rails.cache.fetch(/^data_/)
Rails.cache.read(/^data_/)

Any help/pointers would be greatly appreciated.

Answer 1

You can use .match. So something like this should work:

if Rails.cache.fetch(..).match(/^data_/)
  do something