#66 検索速度改善

db/migrate/20231007090808_improve_search_for_account_statuses.rb

@@ -0,0 +1,15 @@
+# frozen_string_literal: true
+
+require Rails.root.join('lib', 'mastodon', 'migration_helpers')
+
+class ImproveSearchForAccountStatuses < ActiveRecord::Migration[7.0]
+  include Mastodon::MigrationHelpers
+
+  disable_ddl_transaction!
+
+  def change
+    safety_assured do
+      add_index :statuses, [:account_id, :reblog_of_id, :deleted_at, :searchability], name: 'index_statuses_for_get_following_accounts_to_search', where: 'deleted_at IS NULL AND reblog_of_id IS NULL AND searchability IN (0, 10, 1)'
+    end
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_10_01_050733) do
+ActiveRecord::Schema[7.0].define(version: 2023_10_07_090808) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -1203,6 +1203,7 @@
     t.integer "limited_scope"
     t.bigint "quote_of_id"
     t.index ["account_id", "id", "visibility", "updated_at"], name: "index_statuses_20190820", order: { id: :desc }, where: "(deleted_at IS NULL)"
+    t.index ["account_id", "reblog_of_id", "deleted_at", "searchability"], name: "index_statuses_for_get_following_accounts_to_search", where: "((deleted_at IS NULL) AND (reblog_of_id IS NULL) AND (searchability = ANY (ARRAY[0, 10, 1])))"
     t.index ["account_id"], name: "index_statuses_on_account_id"
     t.index ["deleted_at"], name: "index_statuses_on_deleted_at", where: "(deleted_at IS NOT NULL)"
     t.index ["id", "account_id"], name: "index_statuses_local_20190824", order: { id: :desc }, where: "((local OR (uri IS NULL)) AND (deleted_at IS NULL) AND (visibility = 0) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"