PERF: Only refresh the Daily stats hourly, do the others daily.

app/jobs/scheduled/directory_refresh.rb

@@ -1,9 +0,0 @@
-module Jobs
-  class DirectoryRefresh < Jobs::Scheduled
-    every 1.hour
-
-    def execute(args)
-      DirectoryItem.refresh!
-    end
-  end
-end

app/jobs/scheduled/directory_refresh_daily.rb

@@ -0,0 +1,9 @@
+module Jobs
+  class DirectoryRefreshDaily < Jobs::Scheduled
+    every 1.hour
+
+    def execute(args)
+      DirectoryItem.refresh_period!(:daily)
+    end
+  end
+end

app/jobs/scheduled/directory_refresh_older.rb

@@ -0,0 +1,10 @@
+module Jobs
+  class DirectoryRefreshOlder < Jobs::Scheduled
+    every 1.day
+
+    def execute(args)
+      periods = DirectoryItem.period_types.keys - [:daily]
+      periods.each {|p| DirectoryItem.refresh_period!(p)}
+    end
+  end
+end

app/models/directory_item.rb

@@ -17,11 +17,8 @@ class DirectoryItem < ActiveRecord::Base
   end
 
   def self.refresh!
-    ActiveRecord::Base.transaction do
-      exec_sql "TRUNCATE TABLE directory_items"
     period_types.each_key {|p| refresh_period!(p)}
   end
-  end
 
   def self.refresh_period!(period_type)
 
@@ -36,6 +33,8 @@ class DirectoryItem < ActiveRecord::Base
             else 1000.years.ago
             end
 
+    ActiveRecord::Base.transaction do
+      exec_sql "DELETE FROM directory_items WHERE period_type = :period_type", period_type: period_types[period_type]
       exec_sql "INSERT INTO directory_items
                   (period_type, user_id, likes_received, likes_given, topics_entered, days_visited, posts_read, topic_count, post_count)
                   SELECT
@@ -74,3 +73,4 @@ class DirectoryItem < ActiveRecord::Base
                   moderator_action: Post.types[:moderator_action]
     end
   end
+end