PERF: Add index to speed up `DirectoryItem.refresh_period!` query.

2017-03-03 15:14:49 +08:00 · 2017-03-03 15:14:49 +08:00 · 66a0a89591
parent 89f056203e
commit 66a0a89591
1 changed files with 5 additions and 0 deletions
--- a/db/migrate/20170303070706_add_index_to_topic_view_items.rb
+++ b/db/migrate/20170303070706_add_index_to_topic_view_items.rb
@ -0,0 +1,5 @@
+class AddIndexToTopicViewItems < ActiveRecord::Migration
+  def change
+    add_index :topic_views, [:user_id, :viewed_at]
+  end
+end