Cache user cohorts results for a day

app/controllers/admin/user_cohorts_controller.rb

 class Admin::UserCohortsController < Admin::ApplicationController
   def index
     if ApplicationSetting.current.usage_ping_enabled
-      @cohorts = UserCohortsService.new.execute(12)
+      @cohorts = Rails.cache.fetch('user_cohorts', expires_in: 1.day) do
+        UserCohortsService.new.execute
+      end
     end
   end
 end