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Move issue pin to an standalone table for querying performance (#33452)

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Noticed a SQL in gitea.com has a bigger load. It seems both `is_pull`
and `pin_order` are not indexed columns in the database.

```SQL
SELECT `id`, `repo_id`, `index`, `poster_id`, `original_author`, `original_author_id`, `name`, `content`, `content_version`, `milestone_id`, `priority`, `is_closed`, `is_pull`, `num_comments`, `ref`, `pin_order`, `deadline_unix`, `created_unix`, `updated_unix`, `closed_unix`, `is_locked`, `time_estimate` FROM `issue` WHERE (repo_id =?) AND (is_pull = 0) AND (pin_order > 0) ORDER BY pin_order
```

I came across a comment
https://github.com/go-gitea/gitea/pull/24406#issuecomment-1527747296
from @delvh , which presents a more reasonable approach. Based on this,
this PR will migrate all issue and pull request pin data from the
`issue` table to the `issue_pin` table. This change benefits larger
Gitea instances by improving scalability and performance.

---------

Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>
This commit is contained in:
Lunny Xiao
2025-02-17 11:28:37 -08:00
committed by GitHub
parent f5a81f9636
commit 7df09e31fa
13 changed files with 396 additions and 218 deletions
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8
services/issue/issue.go
View File

@@ -197,13 +197,6 @@ func DeleteIssue(ctx context.Context, doer *user_model.User, gitRepo *git.Reposi
}
}
// If the Issue is pinned, we should unpin it before deletion to avoid problems with other pinned Issues
if issue.IsPinned() {
if err := issue.Unpin(ctx, doer); err != nil {
return err
}
}
notify_service.DeleteIssue(ctx, doer, issue)
return nil
@@ -319,6 +312,7 @@ func deleteIssue(ctx context.Context, issue *issues_model.Issue) error {
&issues_model.Comment{RefIssueID: issue.ID},
&issues_model.IssueDependency{DependencyID: issue.ID},
&issues_model.Comment{DependentIssueID: issue.ID},
&issues_model.IssuePin{IssueID: issue.ID},
); err != nil {
return err
}