From 149450946855070bc2792dc73ba3ea3392c2f7da Mon Sep 17 00:00:00 2001 From: takayamaki Date: Wed, 27 Dec 2017 01:56:31 +0900 Subject: [PATCH] more faster index on notifications table (#6108) --- .../20171226094803_more_faster_index_on_notifications.rb | 7 +++++++ db/schema.rb | 4 ++-- 2 files changed, 9 insertions(+), 2 deletions(-) create mode 100644 db/migrate/20171226094803_more_faster_index_on_notifications.rb diff --git a/db/migrate/20171226094803_more_faster_index_on_notifications.rb b/db/migrate/20171226094803_more_faster_index_on_notifications.rb new file mode 100644 index 00000000000..b2e53b82ddc --- /dev/null +++ b/db/migrate/20171226094803_more_faster_index_on_notifications.rb @@ -0,0 +1,7 @@ +class MoreFasterIndexOnNotifications < ActiveRecord::Migration[5.1] + def change + commit_db_transaction + add_index :notifications, [:account_id, :id], order: { id: :desc }, algorithm: :concurrently + remove_index :notifications, name: :index_notifications_on_id_and_account_id_and_activity_type + end +end diff --git a/db/schema.rb b/db/schema.rb index c55020fa409..04d957c637d 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: 20171212195226) do +ActiveRecord::Schema.define(version: 20171226094803) do # These are extensions that must be enabled in order to support this database enable_extension "plpgsql" @@ -259,8 +259,8 @@ ActiveRecord::Schema.define(version: 20171212195226) do t.bigint "account_id" t.bigint "from_account_id" t.index ["account_id", "activity_id", "activity_type"], name: "account_activity", unique: true + t.index ["account_id", "id"], name: "index_notifications_on_account_id_and_id", order: { id: :desc } t.index ["activity_id", "activity_type"], name: "index_notifications_on_activity_id_and_activity_type" - t.index ["id", "account_id", "activity_type"], name: "index_notifications_on_id_and_account_id_and_activity_type", order: { id: :desc } end create_table "oauth_access_grants", force: :cascade do |t|