From f4b0d76cd4ae936a1d327c8a06adf0f50a80b8ad Mon Sep 17 00:00:00 2001
From: tobi <31960611+tsmethurst@users.noreply.github.com>
Date: Wed, 18 May 2022 16:58:26 +0200
Subject: [performance] Add further indexes to mitigate laggy queries (#586)

* start adding more indexes as a migration

* update sqlite version
---
 .../20220518123621_additional_indexing.go          | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 internal/db/bundb/migrations/20220518123621_additional_indexing.go

(limited to 'internal/db')

diff --git a/internal/db/bundb/migrations/20220518123621_additional_indexing.go b/internal/db/bundb/migrations/20220518123621_additional_indexing.go
new file mode 100644
index 000000000..d835fb15b
--- /dev/null
+++ b/internal/db/bundb/migrations/20220518123621_additional_indexing.go
@@ -0,0 +1,64 @@
+/*
+   GoToSocial
+   Copyright (C) 2021-2022 GoToSocial Authors admin@gotosocial.org
+
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Affero General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Affero General Public License for more details.
+
+   You should have received a copy of the GNU Affero General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+package migrations
+
+import (
+	"context"
+
+	"github.com/superseriousbusiness/gotosocial/internal/gtsmodel"
+	"github.com/uptrace/bun"
+)
+
+func init() {
+	up := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			// public timeline index
+			if _, err := tx.
+				NewCreateIndex().
+				Model(&gtsmodel.Status{}).
+				Index("statuses_public_timeline_idx").
+				Column("visibility", "id").
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			// index for checking when an account's 'last-posted' value is
+			if _, err := tx.
+				NewCreateIndex().
+				Model(&gtsmodel.Status{}).
+				Index("statuses_account_id_id_idx").
+				Column("account_id", "id").
+				Exec(ctx); err != nil {
+				return err
+			}
+
+			return nil
+		})
+	}
+
+	down := func(ctx context.Context, db *bun.DB) error {
+		return db.RunInTx(ctx, nil, func(ctx context.Context, tx bun.Tx) error {
+			return nil
+		})
+	}
+
+	if err := Migrations.Register(up, down); err != nil {
+		panic(err)
+	}
+}
-- 
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