writefreely/migrations/v15.go
Matt Baer f96f8268f0 Add index to improve post retrieval speed on large instances
On an instance with millions of posts across all users, a single blog with
thousands of posts on it can take a long time to render. This adds an index
to the `posts` table to speed up the basic GetPosts query.

Run: `writefreely db migrate`

Closes #741
2023-09-26 14:36:34 -04:00

33 lines
675 B
Go

/*
* Copyright © 2023 Musing Studio LLC.
*
* This file is part of WriteFreely.
*
* WriteFreely is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License, included
* in the LICENSE file in this source code package.
*/
package migrations
func addPostRetrievalIndex(db *datastore) error {
t, err := db.Begin()
if err != nil {
t.Rollback()
return err
}
_, err = t.Exec("CREATE INDEX posts_get_collection_index ON posts (`collection_id`, `pinned_position`, `created`)")
if err != nil {
t.Rollback()
return err
}
err = t.Commit()
if err != nil {
t.Rollback()
return err
}
return nil
}