jojo/models/activities
Mathieu Fenniak dea9ef6706 fix: realign indexes on the 'action' table (#10040)
Fixes #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 #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.

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### 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.
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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>
2025-11-18 18:34:25 +01:00
..
action.go fix: realign indexes on the 'action' table (#10040) 2025-11-18 18:34:25 +01:00
action_list.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
action_test.go chore: Remove IsDeleted from action (activity) table (#9829) 2025-11-08 04:20:05 +01:00
federated_user_activity.go Federated user activity following: Isolated model changes (#8078) 2025-06-21 12:02:58 +02:00
federated_user_activity_test.go Federated user activity following: Isolated model changes (#8078) 2025-06-21 12:02:58 +02:00
main_test.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
notification.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
notification_list.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
notification_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
repo_activity.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
repo_activity_test.go Update module github.com/golangci/golangci-lint/cmd/golangci-lint to v2 (forgejo) (#7367) 2025-03-28 22:22:21 +00:00
statistic.go chore: branding import path (#7337) 2025-03-27 19:40:14 +00:00
user_heatmap.go chore: Remove IsDeleted from action (activity) table (#9829) 2025-11-08 04:20:05 +01:00
user_heatmap_test.go chore: Remove IsDeleted from action (activity) table (#9829) 2025-11-08 04:20:05 +01:00