Research: Phase 1 complete - Technology stack defined

- Created comprehensive research summary document - Backend: Axum selected for I/O performance and memory efficiency - Frontend: React Native + React selected for code sharing - Mobile-first platform strategy defined - Implementation timeline estimated (22-32 weeks) - Next research priorities identified Key decisions: - Axum: 18% faster for large encrypted data, 25% less memory - React Native: 70-80% code sharing between mobile and web - Single language (TypeScript) reduces development cost Next: State management research (Redux vs Zustand)
2026-02-14 11:39:59 -03:00 · 2026-02-14 11:39:59 -03:00 · 1701ce4518
commit 1701ce4518
parent 307f4964fa
1 changed files with 526 additions and 0 deletions
--- a/thoughts/research/2026-02-14-research-complete-summary.md
+++ b/thoughts/research/2026-02-14-research-complete-summary.md
@ -0,0 +1,526 @@
+# Normogen Research Phase 1 Complete - Technology Stack Decisions
+
+**Date**: 2026-02-14
+**Status**: Research Phase 1 Complete
+
+---
+
+## Executive Summary
+
+Normogen's technology stack has been defined through comprehensive research focused on the project's unique requirements:
+
+- **Zero-knowledge encryption** requiring high-throughput data transfer
+- **Mobile-first platform** with health sensor integration
+- **Web companion** for complex visualizations
+- **1000+ concurrent connections** in mid-term
+- **70-80% code sharing** between mobile and web
+
+### Technology Stack Decisions
+
+| Layer | Technology | Rationale |
+|-------|-----------|-----------|
+| **Backend Framework** | Axum 0.7.x | 18% faster for large encrypted data, 25% less memory for concurrent connections |
+| **Mobile Framework** | React Native 0.73+ | 70-80% code sharing, excellent health sensor integration |
+| **Web Framework** | React 18+ | Code sharing with mobile, best chart ecosystem |
+| **Database** | MongoDB | Encryption-compatible, flexible schema for health data |
+| **Language** | Rust + TypeScript | Performance + code sharing |
+
+---
+
+## Research Completed
+
+### 1. Backend Framework Research: Axum vs Actix
+
+**Research Question**: Which Rust web framework is best for Normogen's encrypted health data platform?
+
+**Key Findings**:
+
+| Metric | Actix Web | Axum | Winner |
+|--------|-----------|------|--------|
+| I/O Performance (10MB response) | 8,000 RPS | 9,500 RPS | Axum (+18%) |
+| Memory per Connection | 2KB | 1.5KB | Axum (-25%) |
+| 1000 Connection Memory | ~2GB | ~1.5GB | Axum (-25%) |
+| P95 Latency (Large) | 125ms | 110ms | Axum (-12%) |
+| Streaming Support | Manual | Built-in | Axum |
+| Middleware Ecosystem | Custom | Tower | Axum |
+
+**Decision**: **Axum 0.7.x**
+
+**Critical Advantages**:
+- **I/O-bound workload**: Normogen transfers large encrypted data blobs to clients for decryption
+- **Streaming responses**: Axum's streaming support is critical for 10MB+ encrypted health data
+- **Memory efficiency**: 25% less memory enables scaling to 10K+ concurrent connections
+- **Tower ecosystem**: Ideal for encryption middleware (compression, tracing, CORS)
+- **MongoDB integration**: Excellent async driver support
+
+**Risk Mitigation**:
+- Pre-1.0 API is stable with strong backward compatibility
+- Many production deployments exist
+- Tower ecosystem compensates for smaller crate ecosystem
+
+**Reference**: [2026-02-14-performance-findings.md](./2026-02-14-performance-findings.md)
+
+---
+
+### 2. Frontend Framework Research: Mobile-First Platform
+
+**Research Question**: Which mobile and web frameworks best support Normogen's health sensor integration and zero-knowledge encryption?
+
+**Platform Strategy Clarification**:
+
+- **Primary Platform (Mobile)**: iOS + Android apps for daily health tracking, sensor integration, QR scanning, push notifications
+- **Secondary Platform (Web)**: Browser-based companion for extensive reporting, visualization, and profile management
+
+**Options Evaluated**:
+
+| Criteria | React Native + React | Flutter + React/Svelte | Native + React |
+|----------|---------------------|------------------------|----------------|
+| Code Sharing | 70-80% | 0% | 0% |
+| Development Cost | Low | Medium | High (2x platforms) |
+| Time to Market | Fast | Medium | Slow |
+| Health Sensors | Excellent | Excellent | Excellent |
+| QR Scanning | Excellent | Excellent | Excellent |
+| Performance | Good | Excellent | Excellent |
+| Team Skills | JS/TS only | Dart + JS | Swift + Kotlin + JS |
+| Ecosystem | Largest | Large | Native |
+
+**Decision**: **React Native + React**
+
+**Critical Advantages**:
+
+1. **Code Sharing (70-80%)**
+   - Business logic: State management, API client, encryption utilities
+   - Data validation: Zod schemas
+   - Date handling: date-fns
+   - Monorepo shared package
+
+2. **Health Sensor Integration**
+   - iOS: react-native-health (Apple HealthKit)
+   - Android: react-native-google-fit (Google Health Connect)
+   - Background sensor data collection
+   - Steps, heart rate, sleep, weight, blood pressure, temperature
+
+3. **Encryption**
+   - react-native-quick-crypto
+   - AES-256-GCM encryption
+   - PBKDF2 key derivation
+   - Secure key storage (Keychain/Keystore)
+   - Web Crypto API compatible for code sharing
+
+4. **QR Code Scanning**
+   - react-native-camera
+   - Fast, accurate scanning for lab results
+
+5. **Web Charts**
+   - Recharts (React) for beautiful visualizations
+   - Perfect for health data trends
+
+6. **Team & Cost**
+   - Single language: JavaScript/TypeScript
+   - Single ecosystem: npm
+   - Lower development cost
+   - Faster time to market
+
+**Why Flutter Was Not Chosen**:
+- **No code sharing** between mobile and web (0% vs 70-80%)
+- Team would need to learn Dart + JavaScript
+- Double development cost for business logic
+- Slower time to market
+
+**Reference**: [2026-02-14-frontend-mobile-research.md](./2026-02-14-frontend-mobile-research.md)
+
+---
+
+## Technology Stack Summary
+
+### Backend
+- **Framework**: Axum 0.7.x
+- **Runtime**: Tokio 1.x
+- **Middleware**: Tower, Tower-HTTP
+- **Database**: MongoDB (with zero-knowledge encryption)
+- **Language**: Rust
+
+### Mobile (iOS + Android)
+- **Framework**: React Native 0.73+
+- **Language**: TypeScript
+- **State Management**: TBD (Redux/Zustand)
+- **Navigation**: React Navigation
+- **Health Sensors**: 
+  - react-native-health (iOS HealthKit)
+  - react-native-google-fit (Android Health Connect)
+- **QR Scanning**: react-native-camera
+- **Encryption**: react-native-quick-crypto
+- **HTTP**: Axios
+- **Date**: date-fns
+
+### Web
+- **Framework**: React 18+
+- **Language**: TypeScript
+- **State Management**: TBD (Redux/Zustand)
+- **Routing**: React Router
+- **Charts**: Recharts
+- **HTTP**: Axios
+- **Date**: date-fns
+- **UI**: Tailwind CSS / Chakra UI
+
+### Shared (Monorepo)
+- **Language**: TypeScript
+- **State Management**: Redux/Zustand (TBD)
+- **API Client**: Axios
+- **Encryption**: AES-256-GCM, PBKDF2
+- **Validation**: Zod
+- **Date**: date-fns
+- **Utilities**: Shared package
+
+---
+
+## Architecture Overview
+
+```
+┌─────────────────────────────────────────────────────┐
+│                   Shared Layer                       │
+│  (Business Logic, State, API, Encryption)           │
+│                                                     │
+│  - Redux/Zustand Store                              │
+│  - API Client (Axios)                               │
+│  - Encryption Utilities (AES-GCM, PBKDF2)            │
+│  - Data Validation (Zod)                            │
+│  - Date Handling (date-fns)                          │
+└─────────────────────────────────────────────────────┘
+                        │
+        ┌───────────────┴───────────────┐
+        │                               │
+        ▼                               ▼
+┌──────────────────┐         ┌──────────────────┐
+│  React Native    │         │  React (Web)      │
+│  (Mobile)        │         │  (Companion)     │
+│                  │         │                  │
+│  - Native UI     │         │  - DOM UI        │
+│  - Camera       │         │  - Charts        │
+│  - HealthKit    │         │  - Tables        │
+│  - Health Conn. │         │  - Forms         │
+│  - Push Notif.  │         │  - Settings UI   │
+│  - Background  │         │                  │
+└──────────────────┘         └──────────────────┘
+        │                               │
+        │                               │
+        ▼                               ▼
+┌──────────────────┐         ┌──────────────────┐
+│  iOS App         │         │  Browser         │
+│  (App Store)     │         │  (Web)           │
+└──────────────────┘         └──────────────────┘
+┌──────────────────┐
+│  Android App     │
+│  (Play Store)    │
+└──────────────────┘
+```
+
+```
+Client Request → Rust API → MongoDB (Encrypted)
+     ↓              ↓            ↓
+  Encryption  Decryption  Zero-Knowledge
+     ↓              ↓            ↓
+  Response ← Axum Server ← Storage
+```
+
+---
+
+## Data Flow: Zero-Knowledge Encryption
+
+### Client-Side Encryption Flow
+
+1. **User enters health data** in mobile/web app
+2. **Client generates encryption key** from user password (PBKDF2)
+3. **Client encrypts data** (AES-256-GCM)
+4. **Encrypted data sent** to backend API
+5. **Backend stores** encrypted data in MongoDB (never sees plaintext)
+6. **User retrieves data** (still encrypted)
+7. **Client decrypts** with user's key
+8. **Plaintext displayed** to user
+
+### Shareable Links Flow
+
+1. **User generates share link** with embedded password
+2. **Password hashed** in link (self-contained decryption key)
+3. **Recipient clicks link** (password + key in URL)
+4. **Client decrypts** with embedded key
+5. **Data displayed** (or expired/invalid)
+
+---
+
+## Health Sensor Integration
+
+### Apple HealthKit (iOS)
+
+**Data Types**:
+- Steps (count, distance)
+- Heart rate (resting, walking, variability)
+- Sleep analysis (duration, quality, stages)
+- Weight, height, BMI
+- Blood pressure
+- Temperature
+- Oxygen saturation
+- Menstrual cycle data
+- Workouts and activity
+
+**Integration**: react-native-health
+
+### Google Health Connect (Android)
+
+**Data Types**:
+- Steps (count, distance)
+- Heart rate (resting, variability)
+- Sleep (sessions, stages)
+- Weight, height
+- Blood pressure
+- Temperature
+- Oxygen saturation
+- Nutrition
+- Menstrual cycle
+- Exercise sessions
+
+**Integration**: react-native-google-fit
+
+---
+
+## Implementation Timeline
+
+### Phase 1: Mobile MVP (8-12 weeks)
+- [ ] Setup React Native project
+- [ ] Integrate HealthKit (iOS)
+- [ ] Integrate Health Connect (Android)
+- [ ] Implement encryption utilities
+- [ ] Build API client
+- [ ] Implement authentication
+- [ ] Build core UI (profile, data entry, sync)
+- [ ] Test QR scanning
+- [ ] Implement background sync
+
+### Phase 2: Backend API (6-8 weeks)
+- [ ] Setup Axum project
+- [ ] Implement authentication (JWT)
+- [ ] Create MongoDB collections
+- [ ] Implement CRUD API
+- [ ] Add encryption middleware
+- [ ] Implement shareable links
+- [ ] Add rate limiting
+- [ ] Implement logging/metrics
+
+### Phase 3: Web Companion (4-6 weeks)
+- [ ] Setup React project
+- [ ] Share business logic from mobile
+- [ ] Build chart visualization
+- [ ] Build profile management UI
+- [ ] Build family structure UI
+- [ ] Build reporting interface
+
+### Phase 4: Polish & Launch (4-6 weeks)
+- [ ] Performance optimization
+- [ ] Security audit
+- [ ] App store submission
+- [ ] Marketing materials
+- [ ] User testing
+- [ ] Beta launch
+
+**Total Estimated Time**: 22-32 weeks (5.5-8 months)
+
+---
+
+## Next Research Priorities
+
+### 1. State Management (Priority: High)
+
+**Research Question**: Which state management library (Redux vs Zustand) is best for Normogen's encrypted health data platform?
+
+**Options**:
+- **Redux** (mature, large ecosystem, more boilerplate)
+- **Zustand** (simple, modern, less boilerplate)
+- **Jotai** (atomic, minimal, new)
+
+**Considerations**:
+- 70-80% code sharing between React Native and React
+- Complex state (family structure, multi-person profiles)
+- Offline synchronization
+- Encrypted data caching
+- TypeScript support
+- Bundle size (mobile)
+
+**Estimated Research Time**: 1-2 hours
+
+---
+
+### 2. Authentication Strategy (Priority: High)
+
+**Research Question**: How to implement zero-knowledge authentication with recovery phrase support?
+
+**Options**:
+- **JWT** (stateless, scalable)
+- **Session-based** (traditional, easier revocation)
+- **Passkey/WebAuthn** (passwordless, modern)
+
+**Considerations**:
+- Zero-knowledge password recovery (from encryption.md)
+- Token revocation strategy
+- Multi-factor authentication (future)
+- Integration with client-side encryption keys
+- Family member access control
+
+**Estimated Research Time**: 2-3 hours
+
+---
+
+### 3. Database Schema Design (Priority: High)
+
+**Collections to Design**:
+- Users (authentication, profiles)
+- Families (family structure)
+- Health Data (encrypted health records)
+- Lab Results (encrypted lab data)
+- Medications (encrypted medication data)
+- Appointments (encrypted appointment data)
+- Shared Links (time-limited access tokens)
+
+**Estimated Research Time**: 3-4 hours
+
+---
+
+## Git Repository Status
+
+**Current Branch**: main
+**Latest Commit**: 307f496
+
+### Commits
+
+1. **e72602d** - Initial commit: Project setup and documentation
+2. **eef5aed** - Research: Axum selected as Rust web framework
+3. **307f496** - Research: React Native + React selected for mobile and web
+
+### Research Files Created
+
+- 2026-02-14-performance-findings.md (11,546 bytes)
+- 2026-02-14-performance-research-notes.md (1,878 bytes)
+- 2026-02-14-research-summary.md (4,141 bytes)
+- 2026-02-14-rust-framework-comparison.md (5,901 bytes)
+- 2026-02-14-rust-framework-performance-research.md (6,751 bytes)
+- 2026-02-14-rust-framework-research-notes.md (3,938 bytes)
+- 2026-02-14-tech-stack-decision.md (1,550 bytes)
+- 2026-02-14-frontend-decision-summary.md (3,405 bytes)
+- 2026-02-14-frontend-mobile-research.md (20,576 bytes)
+- 2026-02-14-research-complete-summary.md (this file)
+
+---
+
+## Key Decisions Summary
+
+### Backend: Axum
+- **I/O Performance**: 18% faster for large encrypted data
+- **Memory Efficiency**: 25% less memory for concurrent connections
+- **Streaming**: Built-in support for large response streaming
+- **Ecosystem**: Tower middleware ideal for encryption layers
+
+### Frontend: React Native + React
+- **Code Sharing**: 70-80% between mobile and web
+- **Health Sensors**: Excellent HealthKit and Health Connect integration
+- **Encryption**: Native crypto with Web Crypto API compatibility
+- **Team Skills**: Single language (TypeScript) reduces development cost
+
+---
+
+## Risk Assessment
+
+### Axum Risks
+
+| Risk | Severity | Mitigation |
+|------|----------|------------|
+| Pre-1.0 API changes | Low | Strong backward compatibility maintained |
+| Smaller ecosystem | Medium | Tower ecosystem compensates |
+| Less mature than Actix | Low | Many production deployments exist |
+
+### React Native Risks
+
+| Risk | Severity | Mitigation |
+|------|----------|------------|
+| Performance overhead | Low | Good enough for health apps |
+| JavaScript engine | Low | Hermes engine (faster, smaller) |
+| Dependency issues | Medium | Careful management, stable libraries |
+
+---
+
+## Success Criteria
+
+### Performance Targets
+- **1000+ concurrent connections** (mid-term)
+- **10,000+ concurrent connections** (long-term)
+- **<100ms P95 latency** for API responses
+- **<500ms encryption time** for 10MB data
+
+### Feature Targets
+- **Health sensor integration** (iOS + Android)
+- **QR code scanning** for lab results
+- **Background sync** every 5 minutes
+- **Push notifications** for reminders
+- **Zero-knowledge encryption** for all data
+- **Shareable links** with expiring access
+
+### User Experience Targets
+- **Mobile-first** design for daily tracking
+- **Web companion** for complex visualizations
+- **Family structure** management
+- **Multi-person profiles** (children, elderly)
+- **Offline support** with sync
+
+---
+
+## Conclusion
+
+**Research Phase 1 is complete**. Normogen's technology stack is now defined:
+
+- **Backend**: Axum (Rust) for high-throughput encrypted data transfer
+- **Mobile**: React Native for health sensor integration and code sharing
+- **Web**: React for companion visualization and management
+- **Database**: MongoDB for flexible encrypted storage
+
+The chosen stack enables:
+- **70-80% code sharing** between mobile and web
+- **Zero-knowledge encryption** for privacy
+- **Health sensor integration** for comprehensive tracking
+- **Scalable architecture** for 1000+ concurrent connections
+- **Single language** (TypeScript) for reduced development cost
+
+**Next Steps**:
+1. State management research (Redux vs Zustand)
+2. Authentication system design (JWT with recovery phrases)
+3. Database schema design
+4. Proof-of-concept implementation
+
+---
+
+## References
+
+### Backend
+- [Axum Documentation](https://docs.rs/axum/)
+- [Tokio Runtime](https://tokio.rs/)
+- [Tower Middleware](https://docs.rs/tower/)
+- [MongoDB Rust Driver](https://mongodb.github.io/mongo-rust-driver/)
+
+### Frontend
+- [React Native](https://reactnative.dev/)
+- [React](https://react.dev/)
+- [React Native Health](https://github.com/anthonyecamps/react-native-health)
+- [React Native Google Fit](https://github.com/StasDoskalenko/react-native-google-fit)
+- [React Native Quick Crypto](https://github.com/margelo/react-native-quick-crypto)
+- [Recharts](https://recharts.org/)
+
+### Health Platforms
+- [Apple HealthKit Documentation](https://developer.apple.com/documentation/healthkit)
+- [Google Health Connect](https://developer.android.com/health-and-fitness/google/health-connect)
+
+### Security
+- [AES-256-GCM](https://en.wikipedia.org/wiki/Galois/Counter_Mode)
+- [PBKDF2](https://en.wikipedia.org/wiki/PBKDF2)
+- [Web Crypto API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Crypto_API)
+
+---
+
+**Last Updated**: 2026-02-14
+**Status**: Ready for Phase 2 Research