Skip to main content

Lessons Learned

This document captures important lessons learned during the development of LyfeAI Provider.

Development Learnings​

Next.js App Router​

  • Server components significantly improve initial page load
  • Proper use of loading.tsx and error.tsx improves UX
  • Parallel data fetching with Promise.all reduces latency

Supabase Integration​

  • RLS policies must be carefully designed for performance
  • Service role key should only be used in server actions
  • Real-time subscriptions require proper cleanup

FHIR Implementation​

  • FHIR resources are deeply nested - flatten for UI
  • Not all EHRs implement FHIR consistently
  • Validation is crucial for data integrity

Performance Learnings​

Database Optimization​

  • Indexes on foreign keys improve query performance
  • Views simplify complex queries
  • Connection pooling prevents exhaustion

Frontend Optimization​

  • Dynamic imports reduce initial bundle size
  • Image optimization with next/image is essential
  • Suspense boundaries prevent layout shift

Security Learnings​

Authentication​

  • Never trust client-side role checks alone
  • Always validate permissions server-side
  • Session management requires careful consideration

Data Protection​

  • PHI must be encrypted at all levels
  • Audit logs should be immutable
  • Regular security reviews are essential

Ongoing Learnings​

New lessons will be added here as the project evolves.