Rails.cache.clear certain key names?

This is how you can write to cache –

Rails.cache.write('key', 'value', :time_to_idle => 60.seconds, :timeToLive => 600.seconds)

and in order to delete from cache you can use delete action –

Rails.cache.delete('key')

Delete multiple keys –

Rails.cache.delete_if {|k, v| k =~ 'key' }