diff --git a/app/models/question.rb b/app/models/question.rb
index 674baa8..66f70b0 100644
--- a/app/models/question.rb
+++ b/app/models/question.rb
@@ -342,12 +342,10 @@ class Question < ActiveRecord::Base
 
   def record_prompt_cache_miss
 	  $redis.incr(self.pq_key + "_" + Time.now.to_date.to_s + "_"+ "misses")
-	  $redis.expire(self.pq_key, 24*60*60 * 3) #Expire in three days
   end
 
   def record_prompt_cache_hit
 	  $redis.incr(self.pq_key + "_" + Time.now.to_date.to_s + "_"+ "hits")
-	  $redis.expire(self.pq_key, 24*60*60 * 3) #Expire in three days
   end
 
   def get_prompt_cache_misses(date)
@@ -357,6 +355,13 @@ class Question < ActiveRecord::Base
 	  $redis.get(self.pq_key + "_" + date.to_s + "_"+ "hits")
   end
 
+
+  def expire_prompt_cache_tracking_keys(date, expire_time = 24*60*60 * 3) # default expires in three days
+	  $redis.expire(self.pq_key + "_" + date.to_s + "_"+ "hits", expire_time)
+	  $redis.expire(self.pq_key + "_" + date.to_s + "_"+ "misses", expire_time)
+  end
+
+
   def export_and_delete(type, options={})
 	  delete_at = options.delete(:delete_at)
 	  filename = export(type, options)
diff --git a/lib/tasks/test_api.rake b/lib/tasks/test_api.rake
index 38377e2..dfad8b6 100644
--- a/lib/tasks/test_api.rake
+++ b/lib/tasks/test_api.rake
@@ -357,6 +357,9 @@ namespace :test_api do
 		misses = question.get_prompt_cache_misses(Date.yesterday).to_i
 		hits = question.get_prompt_cache_hits(Date.yesterday).to_i
 
+		question.expire_prompt_cache_tracking_keys(Date.yesterday)
+
+
 		
 		yesterday_votes = question.appearances.count(:conditions => ['date(created_at) = ?', Date.yesterday])
 
--
libgit2 0.21.2