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gitea/models/migrations/v1_21
JakobDev 14731a34ff
Add index to `issue_user.issue_id` (#27154)
This fixes a performance bottleneck. It was discovered by Codeberg.
Every where query on that table (which has grown big over time) uses
this column, but there is no index on it.

See this part of the log which was posted on Matrix:
```
2023/09/10 00:52:01 ...rs/web/repo/issue.go:1446:ViewIssue() [W] [Slow SQL Query] UPDATE `issue_user` SET is_read=? WHERE uid=? AND issue_id=? [true x y] - 51.395434887s
2023/09/10 00:52:01 ...rs/web/repo/issue.go:1447:ViewIssue() [E] ReadBy: Error 1205 (HY000): Lock wait timeout exceeded; try restarting transaction
2023/09/10 00:52:01 ...eb/routing/logger.go:102:func1() [I] router: completed GET /Codeberg/Community/issues/1201 for [::ffff:xxx]:0, 500 Internal Server Error in 52384.2ms @ repo/issue.go:1256(repo.ViewIssue)
```
1 year ago
..
main_test.go
v260.go
v261.go
v262.go
v263.go Rename `Sync2` -> `Sync` (#26479) 2 years ago
v264.go
v265.go
v266.go
v267.go
v268.go
v269.go
v270.go
v271.go Allow to archive labels (#26478) 2 years ago
v272.go Add optimistic lock to ActionRun table (#26563) 1 year ago
v273.go chore(actions): support cron schedule task (#26655) 1 year ago
v274.go Artifacts retention and auto clean up (#26131) 1 year ago
v275.go Add a new column schedule_id for action_run to track (#26975) 1 year ago
v276.go Fix wrong xorm get usage on migration (#27111) 1 year ago
v277.go Add index to `issue_user.issue_id` (#27154) 1 year ago