Clear the cache after each test otherwise we are leaking state.

spec/models/application_request_spec.rb

@@ -1,11 +1,14 @@
 require 'rails_helper'
 
 describe ApplicationRequest do
-
   before do
     ApplicationRequest.clear_cache!
   end
 
+  after do
+    ApplicationRequest.clear_cache!
+  end
+
   def inc(key,opts=nil)
     ApplicationRequest.increment!(key,opts)
   end