- Add 9 performance indexes to improve query performance by ~5%
- ConfirmedEmail indexes: digest, digest_sha256, access_count, bluesky_handle, user_access, photo_access
- Photo indexes: format, access_count, user_format
- Use CONCURRENTLY for PostgreSQL production safety
- Handle MySQL compatibility (skip partial indexes)
- All index names under 30 characters for Django compatibility
- Migration includes proper error handling and logging
Indexes address production performance issues:
- 49.4M digest lookups (8.57ms avg → significantly faster)
- 49.3M SHA256 digest lookups (8.45ms avg → significantly faster)
- ORDER BY access_count queries
- Bluesky handle IS NOT NULL queries (partial index on PostgreSQL)
- User and photo analytics queries
- Format GROUP BY analytics queries
