Add created_at index to audit_events tableashmckenzie/add-created-at-index-to-audit-events

2 files changed, 22 insertions, 1 deletions

diff --git a/db/migrate/20190605101234_add_index_to_audit_events_created_at.rb b/db/migrate/20190605101234_add_index_to_audit_events_created_at.rb
new file mode 100644
index 00000000000..845cc6ee0e7
--- /dev/null
+++ b/db/migrate/20190605101234_add_index_to_audit_events_created_at.rb
@@ -0,0 +1,20 @@
+# frozen_string_literal: true
+
+# See http://doc.gitlab.com/ce/development/migration_style_guide.html
+# for more information on how to write migrations for GitLab.
+
+class AddIndexToAuditEventsCreatedAt < ActiveRecord::Migration[5.1]
+  include Gitlab::Database::MigrationHelpers
+
+  DOWNTIME = false
+
+  disable_ddl_transaction!
+
+  def up
+    add_concurrent_index :audit_events, [:created_at, :id]
+  end
+
+  def down
+    remove_concurrent_index :audit_events, [:created_at, :id]
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index fcf9e397ac1..0e6df030d4c 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20190530154715) do
+ActiveRecord::Schema.define(version: 20190605101234) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -205,6 +205,7 @@ ActiveRecord::Schema.define(version: 20190530154715) do
     t.text "details"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.index ["created_at", "id"], name: "index_audit_events_on_created_at_and_id", using: :btree
     t.index ["entity_id", "entity_type"], name: "index_audit_events_on_entity_id_and_entity_type", using: :btree
   end