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PROJECT-CONTORL/openspec/changes/archive/2026-01-11-optimize-query-performance/proposal.md
beabigegg 679b89ae4c feat: implement security, error resilience, and query optimization proposals 
Security Validation (enhance-security-validation):
- JWT secret validation with entropy checking and pattern detection
- CSRF protection middleware with token generation/validation
- Frontend CSRF token auto-injection for DELETE/PUT/PATCH requests
- MIME type validation with magic bytes detection for file uploads

Error Resilience (add-error-resilience):
- React ErrorBoundary component with fallback UI and retry functionality
- ErrorBoundaryWithI18n wrapper for internationalization support
- Page-level and section-level error boundaries in App.tsx

Query Performance (optimize-query-performance):
- Query monitoring utility with threshold warnings
- N+1 query fixes using joinedload/selectinload
- Optimized project members, tasks, and subtasks endpoints

Bug Fixes:
- WebSocket session management (P0): Return primitives instead of ORM objects
- LIKE query injection (P1): Escape special characters in search queries

Tests: 543 backend tests, 56 frontend tests passing

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-11 18:41:19 +08:00

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Change: Optimize Database Query Performance

Why

QA review identified N+1 query patterns in project member listing and related endpoints. When loading a project with many members, each member triggers a separate database query, causing significant performance degradation.

What Changes

  • Implement eager loading (joinedload) for project member relationships
  • Add query batching for related entity loading
  • Add database query logging in development mode for detection

Impact

  • Affected specs: resource-management
  • Affected code:
    • backend/app/services/project_service.py - Member loading
    • backend/app/api/v1/endpoints/projects.py - Query optimization
    • backend/app/models/ - Relationship configurations