# Complete TraceRTM Features & Infrastructure Stack

**Date**: 2025-11-22
**Scope**: ALL features, views, services, and modern SaaS infrastructure

---

## PART 1: COMPLETE FEATURE SET

### 1.1 Core Views (16 Total)

**MVP Views (8)**:
1. **Feature View** - Epics, features, user stories, requirements
2. **Code View** - Source files, functions, classes, modules
3. **Test View** - Test cases, test suites, coverage matrix
4. **API View** - Endpoints, schemas, request/response models
5. **Database View** - Tables, columns, relationships, migrations
6. **Wireframe View** - UI mockups, screens, interactions
7. **Documentation View** - Specs, guides, ADRs, runbooks
8. **Deployment View** - Infrastructure, environments, configs

**Extended Views (8)**:
9. **Architecture View** - C4 diagrams, system design, patterns
10. **Infrastructure View** - Cloud resources, networking, scaling
11. **Data Flow View** - Event streams, message queues, ETL
12. **Security View** - Threats, mitigations, compliance, audit
13. **Performance View** - Metrics, bottlenecks, optimization
14. **Monitoring View** - Observability, alerts, dashboards
15. **Domain Model View** - Entities, aggregates, bounded contexts
16. **User Journey View** - Workflows, touchpoints, personas

### 1.2 Link Types (60+)

**Hierarchical (5)**:
- `decomposes_to` - Feature → Story → Task
- `parent_of` - Epic → Feature
- `child_of` - Inverse of parent
- `contains` - Container relationships
- `part_of` - Component relationships

**Dependency (8)**:
- `depends_on` - Direct dependency
- `blocks` - Blocking relationship
- `blocked_by` - Inverse
- `precedes` - Temporal ordering
- `follows` - Inverse
- `related_to` - Loose coupling
- `conflicts_with` - Mutual exclusion
- `requires` - Hard requirement

**Implementation (6)**:
- `implements` - Code implements feature
- `implemented_by` - Inverse
- `tests` - Test covers feature
- `tested_by` - Inverse
- `validates` - Test validates requirement
- `validated_by` - Inverse

**Data (5)**:
- `reads_from` - Data source
- `writes_to` - Data sink
- `transforms` - Data transformation
- `stores_in` - Persistence
- `retrieves_from` - Data retrieval

**Deployment (4)**:
- `deploys_to` - Environment deployment
- `runs_on` - Infrastructure
- `scales_with` - Scaling relationship
- `migrates_to` - Migration path

**Security (4)**:
- `protects` - Security control
- `threatens` - Security threat
- `mitigates` - Threat mitigation
- `violates` - Compliance violation

**Performance (4)**:
- `optimizes` - Performance optimization
- `bottleneck_in` - Performance bottleneck
- `caches` - Caching strategy
- `indexes` - Database indexing

**Monitoring (4)**:
- `monitors` - Observability
- `alerts_on` - Alert trigger
- `traces` - Distributed tracing
- `logs` - Logging

**Communication (4)**:
- `communicates_with` - Service communication
- `publishes_to` - Event publishing
- `subscribes_to` - Event subscription
- `broadcasts` - Broadcasting

**Temporal (4)**:
- `supersedes` - Version replacement
- `superseded_by` - Inverse
- `scheduled_for` - Timeline
- `completed_on` - Completion

**Business (4)**:
- `generates_revenue` - Revenue stream
- `costs` - Cost center
- `supports_goal` - Business goal
- `enables_feature` - Feature enablement

### 1.3 Item Types (20+)

**Requirements**: Requirement, Epic, Feature, UserStory, Task, Subtask
**Code**: File, Function, Class, Module, Interface, Constant
**Testing**: TestCase, TestSuite, TestScenario, Coverage
**API**: Endpoint, Schema, Request, Response, Error
**Database**: Table, Column, Index, Migration, Constraint
**UI**: Screen, Component, Interaction, Animation
**Documentation**: Specification, Guide, ADR, Runbook, FAQ
**Infrastructure**: Service, Container, Database, Cache, Queue
**Deployment**: Environment, Configuration, Secret, Certificate
**Monitoring**: Metric, Alert, Dashboard, Log, Trace

### 1.4 Core Services

**Item Management**:
- `ItemService` - CRUD + versioning
- `BulkOperationService` - Batch operations
- `ItemRepository` - Data access

**Linking & Relationships**:
- `LinkService` - Link management
- `LinkRepository` - Link queries
- `ImpactAnalysisService` - Change impact

**Analysis**:
- `ShortestPathService` - Graph traversal
- `DependencyAnalysisService` - Dependency resolution
- `CoverageAnalysisService` - Test coverage
- `AdvancedAnalyticsService` - Complex queries

**Agent Coordination**:
- `AgentCoordinationService` - Agent registration + tracking
- `AgentLockService` - Optimistic locking
- `ConflictResolutionService` - Conflict handling

**Event Management**:
- `EventService` - Event logging
- `EventRepository` - Event queries
- `MaterializedViewService` - View refresh

**Export/Import**:
- `ExportImportService` - Data serialization
- `DocumentationService` - Doc generation
- `APIWebhooksService` - Webhook management

**Performance**:
- `BenchmarkService` - Performance testing
- `PerformanceOptimizationService` - Query optimization
- `CacheService` - Caching strategy

**Security**:
- `SecurityComplianceService` - Compliance tracking
- `AuditService` - Audit logging
- `EncryptionService` - Data encryption

### 1.5 API Endpoints (40+)

**Projects**: GET/POST/PATCH/DELETE projects
**Items**: GET/POST/PATCH/DELETE items, bulk operations
**Links**: GET/POST/DELETE links, link queries
**Analysis**: Impact analysis, shortest path, coverage
**Search**: Full-text search, advanced filters
**Export**: JSON, YAML, Markdown, CSV export
**Webhooks**: Create, update, delete webhooks
**Agents**: Register, list, track agents
**Events**: Get history, replay events
**Views**: Get view data, switch views

### 1.6 Advanced Features

**Offline-First**:
- Local IndexedDB storage
- Sync queue management
- Conflict resolution UI
- Background sync

**Real-Time**:
- WebSocket connections
- Live agent activity feed
- Instant updates across clients
- Connection pooling (1000+ agents)

**Search & Discovery**:
- Full-text search (PostgreSQL)
- Semantic search (pgvector embeddings)
- Advanced filters
- Saved searches

**Bulk Operations**:
- Batch create/update/delete
- Undo/redo support
- Progress tracking
- Dry-run preview

**Compliance & Audit**:
- Complete audit trail
- Event sourcing
- Temporal queries
- Compliance reports

**Multi-Project**:
- Project switching
- Cross-project queries
- Shared agent pool
- Project isolation

---

## PART 2: COMPLETE INFRASTRUCTURE STACK

### 2.1 Database Layer

**Primary**: PostgreSQL (Neon serverless)
- Async connection pooling (20 base + 40 overflow)
- JSONB for flexible metadata
- Recursive queries for graph traversal
- Materialized views for performance

**Vector Search**: pgvector (in PostgreSQL)
- Semantic search on requirements
- Embedding generation (OpenAI API)
- HNSW indexes for fast similarity search
- Use case: "Find similar requirements"

**Graph Queries**: PostgreSQL recursive CTEs
- Transitive closure for dependencies
- Shortest path algorithms
- Impact analysis
- Alternative: Neo4j (optional, Phase 2)

### 2.2 Cache Layer

**Redis**: Upstash (serverless)
- Session management
- Rate limiting (100 req/min per agent)
- Query result caching
- Real-time presence tracking
- Pub/sub for WebSocket broadcasts

**Configuration**:
```
- Free tier: 10K commands/day (sufficient for MVP)
- Paid: $0.20/100K commands
- Vercel integration: 1-click setup
```

### 2.3 Message Queue

**NATS** (self-hosted or managed):
- Agent coordination
- Event broadcasting
- Pub/sub for real-time updates
- Request-reply for RPC

**Alternative**: Upstash Kafka (serverless)
- Better for high-volume events
- Durable message storage
- Consumer groups

### 2.4 Search & Embeddings

**Full-Text Search**: PostgreSQL `tsvector`
- Built-in, no extra service
- Fast keyword search
- Ranking support

**Semantic Search**: pgvector + OpenAI
- Generate embeddings for requirements
- Store in PostgreSQL
- Query via similarity search
- Cost: $0.02 per 1M tokens

### 2.5 Frontend Deployment

**Web**: Vercel
- Auto-deploy on push
- Edge functions for API routes
- Serverless functions
- CDN for static assets
- Free tier: 100GB bandwidth/month

**PWA**: Same Vercel deployment
- Service worker caching
- Offline support
- Install prompt

**Desktop**: GitHub Releases
- Electron auto-updates
- Delta updates (only changed files)
- Staged rollout

**Mobile**: App Store + Play Store
- Expo EAS builds
- Over-the-air updates
- Push notifications

### 2.6 Backend Deployment

**Option A: Vercel (Recommended for MVP)**
- FastAPI on serverless functions
- Cold start: ~1-2s (acceptable for internal tool)
- Cost: $0.50 per 1M requests
- Limitation: 10s timeout (need async tasks)

**Option B: Railway/Render (Better for production)**
- Docker container
- Always-warm instances
- Better for WebSocket
- Cost: $5-20/month

**Option C: AWS Lambda + RDS**
- Scalable
- Pay-per-use
- More complex setup

### 2.7 Async Tasks

**Inngest** (serverless task queue):
- Background jobs (event processing)
- Scheduled tasks (cache refresh)
- Retry logic
- Monitoring
- Free tier: 500K events/month

**Use cases**:
- Refresh materialized views
- Generate embeddings
- Export reports
- Webhook delivery

### 2.8 Monitoring & Observability

**Logging**: Vercel Logs + Datadog
- Structured logging
- Log aggregation
- Alerting

**Metrics**: OpenTelemetry + Prometheus
- Request latency
- Database query time
- Cache hit rate
- Agent activity

**Error Tracking**: Sentry
- Exception tracking
- Release tracking
- Performance monitoring
- Free tier: 5K events/month

**Uptime Monitoring**: Pingdom/Uptime Robot
- Health checks
- Alerting
- Status page

### 2.9 Authentication & Authorization

**JWT Tokens**:
- 15-minute expiry
- Refresh tokens (7-day expiry)
- Stored in secure HTTP-only cookies
- Signed with RS256

**Agent Authentication**:
- API keys for agents
- Rate limiting per agent
- Activity logging

**RBAC**:
- Admin, Editor, Viewer roles
- Project-level permissions
- Feature flags for beta features

### 2.10 Security

**Data Encryption**:
- TLS 1.3 for transit
- AES-256 for sensitive fields (passwords, API keys)
- Encryption at rest (Neon provides)

**API Security**:
- CORS: Restrict to known origins
- CSRF protection
- Input validation (Pydantic)
- SQL injection prevention (SQLAlchemy ORM)

**Compliance**:
- SOC 2 audit trail
- GDPR data export
- Right to deletion
- Data residency (US/EU)

---

## PART 3: FREEMIUM SAAS PRICING MODEL

### 3.1 Tier Structure

**Free Tier**:
- 1 project
- 100 items
- 5 agents
- 1GB storage
- Community support
- Cost: $0

**Pro Tier** ($29/month):
- 10 projects
- 10K items
- 50 agents
- 100GB storage
- Priority support
- Semantic search
- Advanced analytics

**Enterprise** (Custom):
- Unlimited projects
- Unlimited items
- Unlimited agents
- Dedicated support
- SLA guarantee
- Custom integrations

### 3.2 Infrastructure Costs (Per User)

**Free Tier** (1000 users):
- Database: $50/month (Neon)
- Cache: $0 (Upstash free)
- Search: $0 (pgvector in Postgres)
- Compute: $0 (Vercel free)
- **Total**: $50/month = $0.05/user

**Pro Tier** (100 users):
- Database: $100/month
- Cache: $20/month (Upstash)
- Compute: $50/month (Vercel)
- Monitoring: $20/month (Datadog)
- **Total**: $190/month = $1.90/user

**Gross Margin**: 93% (at $29/month)

### 3.3 Cost Optimization

**Database**:
- Use Neon (cheaper than Supabase)
- Connection pooling (reduce connections)
- Materialized views (pre-compute expensive queries)
- Archive old events (keep 1 year)

**Cache**:
- Upstash (serverless, pay-per-use)
- Aggressive TTLs (5-minute cache)
- Compress cached data

**Compute**:
- Vercel free tier (100GB bandwidth)
- Edge functions for API routes
- Lazy load heavy features

**Search**:
- Use PostgreSQL full-text (free)
- Semantic search only for Pro tier
- Batch embedding generation (cheaper)

---

## PART 4: DEPLOYMENT ARCHITECTURE

### 4.1 Development Environment

```
Local Machine
├── Backend: FastAPI (uvicorn)
├── Frontend: React (Vite dev server)
├── Database: PostgreSQL (Docker)
├── Cache: Redis (Docker)
└── Message Queue: NATS (Docker)
```

### 4.2 Staging Environment

```
Vercel (Frontend)
├── Web: React app
├── PWA: Service worker
└── API: Serverless functions

Neon (Database)
├── PostgreSQL
├── pgvector
└── Backups

Upstash (Cache)
└── Redis
```

### 4.3 Production Environment

```
Vercel (Frontend)
├── Web: React app (CDN)
├── PWA: Service worker
├── Desktop: GitHub Releases
└── Mobile: App Store + Play Store

Railway/Render (Backend)
├── FastAPI container
├── WebSocket support
└── Auto-scaling

Neon (Database)
├── PostgreSQL (HA)
├── pgvector
├── Automated backups
└── Point-in-time recovery

Upstash (Cache)
├── Redis (HA)
└── Pub/sub

Inngest (Async Tasks)
├── Background jobs
└── Scheduled tasks

Sentry (Error Tracking)
└── Exception monitoring

Datadog (Monitoring)
├── Metrics
├── Logs
└── Traces
```

---

## PART 5: IMPLEMENTATION PRIORITY

### Phase 1 (MVP - 4 weeks)
- ✓ Backend: FastAPI + PostgreSQL
- ✓ Frontend: React web + PWA
- ✓ Core views: Feature, Code, Test, API
- ✓ Basic linking
- ✓ Offline-first
- ✓ Real-time WebSocket

### Phase 2 (Extended - 4 weeks)
- Extended views (8 more)
- Semantic search (pgvector)
- Advanced analytics
- Bulk operations
- Desktop (Electron)

### Phase 3 (Polish - 2 weeks)
- Mobile (React Native)
- Performance optimization
- Security hardening
- Compliance audit
- Documentation

### Phase 4 (Scale - Ongoing)
- Neo4j for complex graphs
- Kafka for high-volume events
- Multi-region deployment
- Enterprise features


