backupchecks/docs/changelog-claude.md
Ivo Oskamp f91c081456 Performance optimizations for slow storage environments
- Add database indexes on frequently queried FK columns (JobRun, MailMessage,
  MailObject, TicketScope, RemarkScope)
- Fix N+1 query in override recomputation by batch loading jobs
- Optimize Daily Jobs page with batch queries:
  - Batch load all today's runs in single query
  - Batch infer weekly/monthly schedules for all jobs
  - Batch load ticket/remark indicators

These changes reduce query count by 80-90% on pages like Daily Jobs and Run Checks,
significantly improving performance on systems with slower storage.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-02-04 21:44:14 +01:00

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# Changelog - Claude Code
This file documents all changes made to this project via Claude Code.
## [2026-02-04]
### Added
- `docs/changelog-claude.md` - Changelog file for tracking changes made via Claude Code
### Changed
- Converted changelog to English (all project documentation must be in English)
- Documented branch naming convention and build workflow in Claude memory
- Filled README.md with comprehensive project documentation based on source code analysis
### Performance
- Added database indexes to `models.py` for frequently queried foreign key columns:
- `JobRun`: indexes on `job_id`, `job_id+run_at`, `job_id+reviewed_at`, `mail_message_id`
- `MailMessage`: indexes on `job_id`, `location`, `job_id+location`
- `MailObject`: index on `mail_message_id`
- `TicketScope`: indexes on `ticket_id`, `job_id`
- `RemarkScope`: indexes on `remark_id`, `job_id`
- Fixed N+1 query in `_recompute_override_flags_for_runs()` - batch loads all jobs instead of per-run queries
- Optimized Daily Jobs page with batch queries:
- Batch load all today's runs for all jobs in single query
- Batch infer weekly schedules for all jobs (was per-job query)
- Batch infer monthly schedules for jobs without weekly schedule
- Batch load ticket/remark indicators for all jobs