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Fix repo indexer not updating upon push (#9957)#9963

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techknowlogick merged 2 commits into
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guillep2k:backport-9957
Jan 25, 2020
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Fix repo indexer not updating upon push (#9957)#9963
techknowlogick merged 2 commits into
go-gitea:release/v1.11from
guillep2k:backport-9957

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Backport for #9957

@GiteaBot GiteaBot added the lgtm/need 1 This PR needs approval from one additional maintainer to be merged. label Jan 24, 2020
@zeripath zeripath added this to the 1.11.0 milestone Jan 24, 2020
@GiteaBot GiteaBot added lgtm/done This PR has enough approvals to get merged. There are no important open reservations anymore. and removed lgtm/need 1 This PR needs approval from one additional maintainer to be merged. labels Jan 24, 2020
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ping lg-tm

@techknowlogick techknowlogick merged commit 60f91d5 into go-gitea:release/v1.11 Jan 25, 2020
@go-gitea go-gitea locked and limited conversation to collaborators Nov 24, 2020
project-mirrors-bot-tu Bot pushed a commit to project-mirrors/forgejo-as-gitea-fork that referenced this pull request Nov 18, 2025
Fixes go-gitea#9963.  This realigns all the indexes on the `action` table to best match their intended usages.

New:
- `IDX_action_created_unix (created_unix)`
    - Intended for usage in `DeleteOldActions`.
- `IDX_action_repo_id_created_unix (repo_id, created_unix)`
    - Intended for usage when fetching action feeds for a repo and a team, with the same logic as that described below in `IDX_action_user_id_created_unix`.
- `IDX_action_repo_id_op_type (repo_id, op_type)`
    - Intended for `DeleteIssueActions` when it searches for CreateIssue & CreatePullRequest actions for cleanup.  Could be optimized further with a denormalization of the issue identifier into a field, but there's no current evidence that this is required.

Replaced:
- `IDX_action_c_u (created_unix, user_id)`
    - Replaced with `IDX_action_user_id_created_unix (user_id, created_unix)`.  When action feeds are created w/ `ORDER BY created_unix DESC LIMIT 20`, an index beginning with `created_unix` will have to index scan until it can satisfy 20 records; the `user_id` portion of the index is effectively useless until two records appear at the same time.  By inverting the order, the database will be able to identify the records created by a user and then pop the most recent 20 from the index order.
    - At the scale of database I have access to, the performance difference is unmeasurable.  This change is supported by theoretical grounds and the findings of go-gitea#9963, but no experimental evidence.

Removed:
- `IDX_action_user_id (user_id)`
    - Redundant with the new `IDX_action_user_id_created_unix`.
- `IDX_action_r_u (repo_id, user_id)`
    - No clear consumer for this index.

Retained with no modification:
- `IDX_action_comment_id (comment_id)`
    - Used in `DeleteIssueActions`.
- `IDX_action_au_r_c_u (act_user_id, repo_id, created_unix, user_id)`
    - Heat map generation.

## Checklist

The [contributor guide](https://forgejo.org/docs/next/contributor/) contains information that will be helpful to first time contributors. There also are a few [conditions for merging Pull Requests in Forgejo repositories](https://codeberg.org/forgejo/governance/src/branch/main/PullRequestsAgreement.md). You are also welcome to join the [Forgejo development chatroom](https://matrix.to/#/#forgejo-development:matrix.org).

### Tests

- I added test coverage for Go changes...
  - [ ] in their respective `*_test.go` for unit tests.
  - [ ] in the `tests/integration` directory if it involves interactions with a live Forgejo server.
- I added test coverage for JavaScript changes...
  - [ ] in `web_src/js/*.test.js` if it can be unit tested.
  - [ ] in `tests/e2e/*.test.e2e.js` if it requires interactions with a live Forgejo server (see also the [developer guide for JavaScript testing](https://codeberg.org/forgejo/forgejo/src/branch/forgejo/tests/e2e/README.md#end-to-end-tests)).

### Documentation

- [ ] I created a pull request [to the documentation](https://codeberg.org/forgejo/docs) to explain to Forgejo users how to use this change.
- [x] I did not document these changes and I do not expect someone else to do it.

### Release notes

- [ ] I do not want this change to show in the release notes.
- [x] I want the title to show in the release notes with a link to this pull request.
- [ ] I want the content of the `release-notes/<pull request number>.md` to be be used for the release notes instead of the title.

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/10040
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: Mathieu Fenniak <mathieu@fenniak.net>
Co-committed-by: Mathieu Fenniak <mathieu@fenniak.net>
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