- Fixed N+1 query issue in method that was causing excessive database calls
- Optimized category lookups by pre-computing category totals with for O(1) lookup
- Added explicit to prevent redundant category association loads
- Applied same optimization to method
- Added comprehensive test coverage to verify performance improvements
- These changes significantly reduce database queries when rendering budget donut charts
Performance Impact:
- Before: N budget_categories × 2 queries (category + expense lookup) = 2N queries per chart
- After: 2 total queries (1 preload + 1 expense totals) regardless of category count
This optimization is especially impactful for users with many budget categories,
reducing response time and database load on budget-related pages.
