Fix: #355 LTLのインデックスが適切にはられていない問題 (#357)

* Fix: #355 LTLのインデックスが適切にはられていない問題

* Migrate

db/migrate/20231212225737_improve_index_for_public_timeline_speed.rb

@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+class ImproveIndexForPublicTimelineSpeed < ActiveRecord::Migration[7.0]
+  disable_ddl_transaction!
+
+  def up
+    add_index :statuses, [:id, :account_id], name: :index_statuses_local_20231213, algorithm: :concurrently, order: { id: :desc }, where: '(local OR (uri IS NULL)) AND deleted_at IS NULL AND visibility IN (0, 10, 11) AND reblog_of_id IS NULL AND ((NOT reply) OR (in_reply_to_account_id = account_id))'
+    add_index :statuses, [:id, :account_id], name: :index_statuses_public_20231213, algorithm: :concurrently, order: { id: :desc }, where: 'deleted_at IS NULL AND visibility IN (0, 10, 11) AND reblog_of_id IS NULL AND ((NOT reply) OR (in_reply_to_account_id = account_id))'
+    remove_index :statuses, name: :index_statuses_local_20190824
+    remove_index :statuses, name: :index_statuses_public_20200119
+  end
+
+  def down
+    add_index :statuses, [:id, :account_id], name: :index_statuses_local_20190824, algorithm: :concurrently, 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))'
+    add_index :statuses, [:id, :account_id], name: :index_statuses_public_20200119, algorithm: :concurrently, order: { id: :desc }, where: 'deleted_at IS NULL AND visibility = 0 AND reblog_of_id IS NULL AND ((NOT reply) OR (in_reply_to_account_id = account_id))'
+    remove_index :statuses, name: :index_statuses_local_20231213
+    remove_index :statuses, name: :index_statuses_public_20231213
+  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[7.1].define(version: 2023_11_05_225839) do
+ActiveRecord::Schema[7.1].define(version: 2023_12_12_225737) do
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
 
@@ -1235,8 +1235,8 @@ ActiveRecord::Schema[7.1].define(version: 2023_11_05_225839) do
     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)))"
-    t.index ["id", "account_id"], name: "index_statuses_public_20200119", order: { id: :desc }, where: "((deleted_at IS NULL) AND (visibility = 0) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"
+    t.index ["id", "account_id"], name: "index_statuses_local_20231213", order: { id: :desc }, where: "((local OR (uri IS NULL)) AND (deleted_at IS NULL) AND (visibility = ANY (ARRAY[0, 10, 11])) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"
+    t.index ["id", "account_id"], name: "index_statuses_public_20231213", order: { id: :desc }, where: "((deleted_at IS NULL) AND (visibility = ANY (ARRAY[0, 10, 11])) AND (reblog_of_id IS NULL) AND ((NOT reply) OR (in_reply_to_account_id = account_id)))"
     t.index ["in_reply_to_account_id"], name: "index_statuses_on_in_reply_to_account_id", where: "(in_reply_to_account_id IS NOT NULL)"
     t.index ["in_reply_to_id"], name: "index_statuses_on_in_reply_to_id", where: "(in_reply_to_id IS NOT NULL)"
     t.index ["quote_of_id", "account_id"], name: "index_statuses_on_quote_of_id_and_account_id"