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## ποΈ System Architecture Overview
```
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β CLIENT LAYER β
β β
β βββββββββββββββββββ ββββββββββββββββββββ βββββββββββββββββββββββββββ β
β β Next.js Web β β React Flow UI β β Visualization Layer β β
β β (Frontend) β β (Graph Browser) β β D3.js, Cytoscape β β
β ββββββββββ¬βββββββββ ββββββββββ¬ββββββββββ ββββββββββββββ¬βββββββββββββ β
β β β β β
β ββββββββββββββββββββββΌββββββββββββββββββββββββββ β
β β HTTPS/REST β
β β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β API GATEWAY LAYER β
β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β FastAPI Router β β
β β GET/POST /api/v1/analysis/run β β
β β GET /api/v1/analysis/{id}/results β β
β β POST /api/v1/papers/upload β β
β β GET /api/v1/health/ready β β
β β [+ 20+ more endpoints] β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β ORCHESTRATION LAYER β
β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β LangGraph State Machine β β
β β β β
β β [Input] β [Extract] β [Contradictions] β [Hypotheses] β β
β β β β β β β
β β [Gaps] β [Protocols (3x)] β [Self-Critique] β β
β β β β β
β β [Output] β β
β β β β
β β β’ Multi-step reasoning workflow β β
β β β’ Self-consistency layer (3 versions β best selection) β β
β β β’ Fallback to LLM if K2 unavailable β β
β β β’ Audit trail of every step β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β SERVICES LAYER β
β β
β ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ β
β β Analysis β β Paper β β Project β β Protocol β β
β β Service β β Service β β Service β β Service β β
β β β β β β β β β β
β β β’ Run β β β’ Upload β β β’ Create β β β’ Generate β β
β β β’ Track β β β’ Parse β β β’ Manage β β β’ Validate β β
β β β’ Results β β β’ Chunk β β β’ Query β β β’ Export β β
β ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ β
β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β PROCESSING LAYER β
β β
β βββββββββββββββββββ ββββββββββββββββββββ ββββββββββββββββββββ β
β β PDF Parser β β Embeddings β β K2 Think Client β β
β β β β Generator β β β β
β β β’ PyMuPDF β β β β β’ Analyze β β
β β β’ PyPDF2 β β β’ OpenAI API β β β’ Generate β β
β β β’ Unstructured β β β’ Fallback LLM β β β’ Critique β β
β β β β β β β β
β ββββββββββ¬βββββββββ ββββββββββ¬ββββββββββ ββββββββββ¬ββββββββββ β
β β β β β
β ββββββββββββββββββββββΌββββββββββββββββββββββ β
β β β
β ββββββββββββββββββββββββββββββββββββββββββββ β
β β Vector Store & Semantic Search β β
β β (Qdrant Integration) β β
β ββββββββββββββββββββββββββββββββββββββββββββ β
β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β DATA PERSISTENCE LAYER β
β β
β βββββββββββββββββββββββββββ βββββββββββββββββββββββββββββββββββββββββββ β
β β PostgreSQL (Primary) β β Qdrant (Vector DB) β β
β β β β β β
β β ββ users β β ββ paper_embeddings β β
β β ββ projects β β ββ chunk_embeddings β β
β β ββ research_papers β β ββ semantic_search_index β β
β β ββ paper_chunks β β β β
β β ββ analysis_runs β β + Hybrid search (keyword + semantic) β β
β β ββ contradictions β β β β
β β ββ hypotheses β β β β
β β ββ protocols β β β β
β β ββ reasoning_traces β β β β
β β ββ activity_logs β β β β
β β ββ research_gaps β β β β
β β β β β β
β β UUID Primary Keys β β Persistent Collections β β
β β JSONB for flexibility β β Fast similarity search β β
β β Audit trail support β β Metadata filtering β β
β β β β β β
β βββββββββββββββββββββββββββ βββββββββββββββββββββββββββββββββββββββββββ β
β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β INFRASTRUCTURE LAYER β
β β
β ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ β
β β Docker β β Redis β β PostgreSQL β β Qdrant β β
β β Containers β β (Cache) β β (Primary β β (Vector β β
β β β β β β Data) β β Search) β β
β β β’ API β β β’ Queue β β β β β β
β β β’ Workers β β β’ Cache β β β’ Cluster β β β’ Cluster β β
β β β’ Compose β β β’ Sessions β β β’ Backup β β β’ Replicas β β
β ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ ββββββββββββββββ β
β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β Deployment Orchestration β β
β β β’ Railway (Hackathon - simple) β β
β β β’ Kubernetes (Startup - scalable) β β
β β β’ AWS ECS / GCP Cloud Run (Enterprise) β β
β ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
```
---
## π Data Flow Diagram
```
1. USER UPLOADS PAPERS
β
User β [Frontend Upload] β FastAPI /papers/upload β Storage
2. SYSTEM PROCESSES WITH ORCHESTRATION
β
Papers β [PDFParser] β [Chunking] β [Embeddings]
β β β
Content ββββ΄βββββββββββββββ΄βββββββββββββ΄β [Qdrant Vector DB]
3. ANALYSIS WORKFLOW (LangGraph)
β
[Extract] β [Contradictions] β [Hypotheses] β [Gaps]
β β β β
Use: K2 API + OpenAI LLM for each step
4. PROTOCOL GENERATION WITH SELF-CRITIQUE
β
[Generate v1] ββ
[Generate v2] ββΌβ [Select Best] β [Validate] β [Store]
[Generate v3] ββ
5. RESULTS STORED & QUERYABLE
β
PostgreSQL β [Analysis Results]
PostgreSQL β [Contradictions]
PostgreSQL β [Protocols]
PostgreSQL β [Audit Trail]
6. FRONTEND VISUALIZES
β
Results β [API] β [React Components] β [User Views]
β
Reasoning Trace β [React Flow Graph]
Contradictions β [Data Table + Severity]
Protocols β [Rich Editor + Export]
```
---
## π Technology Stack Layers
```
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β PRESENTATION LAYER β
β Next.js | React 18 | Tailwind CSS | React Flow | D3.js β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β API LAYER β
β FastAPI | Uvicorn | Pydantic | OpenAPI (Swagger) β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β ORCHESTRATION LAYER β
β LangGraph | LangChain | K2 Think API | OpenAI GPT-4 β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β PROCESSING LAYER β
β PyMuPDF | Unstructured | sentence-transformers | Qdrant β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β DATA LAYER β
β PostgreSQL | SQLAlchemy | Qdrant | Redis β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β INFRASTRUCTURE LAYER β
β Docker | Docker Compose | Kubernetes/Railway/AWS β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
```
---
## π Deployment Architecture
### Development (Local)
```
βββββββββββββββββββββββββββββββββββββββ
β Docker Compose on Localhost β
βββββββββββββββββββββββββββββββββββββββ€
β Frontend (Next.js) :3000 β
β API (FastAPI) :8000 β
β PostgreSQL :5432 β
β Qdrant :6333 β
β Redis :6379 β
βββββββββββββββββββββββββββββββββββββββ
```
### Hackathon (Railway)
```
βββββββββββββββββββββββββββββββββββββββ
β Railway.app β
βββββββββββββββββββββββββββββββββββββββ€
β API Service β
β ββ Auto-scaling β
β ββ Load balancing β
β ββ HTTPS + domain β
β β
β PostgreSQL (Managed) β
β Redis (Managed) β
β Environment variables β
βββββββββββββββββββββββββββββββββββββββ
β
βββββββββββββββββββββββββββββββββββββββ
β Vercel.app β
βββββββββββββββββββββββββββββββββββββββ€
β Next.js Frontend β
β ββ Edge functions β
β ββ CDN β
β ββ Analytics β
βββββββββββββββββββββββββββββββββββββββ
```
### Production (AWS)
```
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β AWS Region β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β API Tier β β
β β ββ Application Load Balancer (ALB) β β
β β ββ ECS Fargate (Auto-scaling) β β
β β ββ CloudWatch Logs β β
β β ββ EC2 Auto Scaling Groups β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β Data Tier β β
β β ββ RDS PostgreSQL (Multi-AZ) β β
β β ββ ElastiCache Redis β β
β β ββ S3 for PDF storage β β
β β ββ Secrets Manager β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β Vector Search Tier β β
β β ββ Qdrant cluster (3-5 nodes) β β
β β ββ OpenSearch Domain (optional) β β
β β ββ CloudFront distribution β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β Frontend Tier β β
β β ββ CloudFront CDN β β
β β ββ Route 53 DNS β β
β β ββ Certificate Manager SSL/TLS β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
β β Monitoring & Analytics β β
β β ββ CloudWatch β β
β β ββ X-Ray tracing β β
β β ββ GuardDuty (security) β β
β β ββ Cost Explorer β β
β βββββββββββββββββββββββββββββββββββββββββββββββ β
ββββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
```
---
## π Security Architecture
```
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
β SECURITY LAYERS β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ€
β β
β ββ Network Level ββββββββββββββββββββββββββββββββββ β
β β β’ VPC isolation (AWS) β β
β β β’ Security groups (firewall rules) β β
β β β’ WAF (Web Application Firewall) β β
β β β’ DDoS protection (CloudFlare/AWS Shield) β β
β βββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
β ββ Transport Level ββββββββββββββββββββββββββββββββ β
β β β’ HTTPS/TLS 1.3 β β
β β β’ Certificate pinning β β
β β β’ Encryption in transit β β
β βββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
β ββ Application Level ββββββββββββββββββββββββββββββ β
β β β’ API authentication (JWT tokens) β β
β β β’ Rate limiting β β
β β β’ Input validation & sanitization β β
β β β’ CORS configuration β β
β β β’ Security headers (CSP, HSTS) β β
β βββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
β ββ Data Level βββββββββββββββββββββββββββββββββββββ β
β β β’ Database encryption at rest β β
β β β’ Password hashing (bcrypt) β β
β β β’ Secrets management (AWS Secrets Manager) β β
β β β’ PII masking in logs β β
β βββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
β ββ Audit & Compliance βββββββββββββββββββββββββββββ β
β β β’ Activity logging (all operations) β β
β β β’ Audit trail immutability β β
β β β’ Data retention policies β β
β β β’ Compliance monitoring (GDPR, HIPAA) β β
β βββββββββββββββββββββββββββββββββββββββββββββββββββ β
β β
βββββββββββββββββββββββββββββββββββββββββββββββββββββββββββ
```
---
## π Scalability Path
```
Phase 1: MVP (Hackathon)
ββ Docker Compose locally
ββ Single API server
ββ PostgreSQL single instance
ββ Qdrant single node
ββ Manual scaling
β
Phase 2: Early Startup
ββ Railway deployment
ββ Managed database
ββ Redis cluster
ββ Qdrant cluster (3 nodes)
ββ Auto-scaling enabled
ββ ~1k users
β
Phase 3: Growth
ββ AWS multi-region
ββ RDS Multi-AZ
ββ Load balancing
ββ Caching strategy
ββ Async processing
ββ ~10k users
β
Phase 4: Enterprise
ββ Kubernetes cluster
ββ Database sharding
ββ Vector DB cluster
ββ Multiple regions
ββ Advanced monitoring
ββ ~100k+ users
```
---
## π― Summary
| Component | Technology | Role |
|-----------|-----------|------|
| **Frontend** | Next.js, React, Tailwind | User interface |
| **API** | FastAPI, Uvicorn | REST endpoints |
| **Orchestration** | LangGraph, LangChain | Multi-step workflows |
| **AI** | K2 Think V2, OpenAI GPT-4 | Deep reasoning |
| **Document Processing** | PyMuPDF, Unstructured | PDF extraction |
| **Embeddings** | OpenAI embeddings | Vector generation |
| **Vector Search** | Qdrant | Semantic search |
| **Primary DB** | PostgreSQL | Structured data |
| **Cache** | Redis | Performance |
| **Deployment** | Docker, Railway/AWS | Infrastructure |
---
**This architecture is hackathon-ready AND scalable to production!** π
|