# Technology Stack Decisions

**Last Updated**: 2026-02-14

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## Decisions Made

### 1. Rust Web Framework: Axum

**Decision**: Axum 0.7.x

**Rationale**:
- Superior I/O performance for encrypted data transfer
- Better streaming support for large encrypted responses
- Lower memory usage for concurrent connections
- Tower middleware ecosystem
- Excellent async patterns for lazy loading

**Risk Mitigation**:
- Pre-1.0 API is stable enough for production
- Strong backward compatibility maintained
- Many production deployments exist

**Reference**: [2026-02-14-performance-findings.md](./2026-02-14-performance-findings.md)

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## Still To Be Decided

### 1. Frontend Framework (Priority: High)

**Options**:
- React (most popular, largest ecosystem)
- Vue.js (simpler learning curve)
- Svelte/SvelteKit (modern, compiled, smaller bundles)

**Considerations for Normogen**:
- Client-side encryption requirements
- Chart/visualization libraries
- Mobile app code sharing
- Zero-knowledge architecture
- Real-time data updates

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### 2. Authentication Strategy (Priority: High)

**Options**:
- JWT (stateless, scalable)
- Session-based (traditional, easier revocation)
- Passkey/WebAuthn (passwordless, modern)

**Considerations for Normogen**:
- Zero-knowledge password recovery
- Token revocation strategy
- Integration with client-side encryption keys
- Family member access control

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## Next Research Priority

Research frontend framework options for zero-knowledge encrypted health data platform.

Estimated Research Time: 3-4 hours