System Overview
Detailed overview of the Staque IO system architecture and component interactions.
System Layers
Presentation
- Next.js React Components
- Tailwind CSS
- Context Providers
- Client-side State
Application
- Next.js API Routes
- Business Logic
- Authentication
- Authorization
Integration
- AWS SDK Integration
- NVIDIA NIM API
- OpenAI API
- Pricing Services
Data
- PostgreSQL Database
- Connection Pooling
- JSONB Storage
- Transactional Queries
Request Processing Flow
┌─────────────┐
│ Browser │
│ (Client) │
└──────┬──────┘
│ 1. HTTP Request
│ (includes JWT token)
▼
┌─────────────────────────────────┐
│ Next.js Frontend │
│ • React Components │
│ • Client-side Routing │
│ • State Management (Context) │
└──────┬──────────────────────────┘
│ 2. API Call
│ (fetch with auth header)
▼
┌─────────────────────────────────┐
│ Next.js API Routes │
│ • extractUserFromRequest() │
│ • JWT Verification │
│ • Role-based Authorization │
└──────┬──────────────────────────┘
│ 3. Authenticated Request
├─────────────────┬─────────────────┐
▼ ▼ ▼
┌──────────────┐ ┌──────────────┐ ┌──────────────┐
│ Database │ │ AWS APIs │ │ External │
│ Queries │ │ • Bedrock │ │ APIs │
│ │ │ • SageMaker │ │ • NVIDIA │
│ │ │ • Pricing │ │ • OpenAI │
└──────┬───────┘ └──────┬───────┘ └──────┬───────┘
│ │ │
└─────────────────┴─────────────────┘
│ 4. Aggregated Data
▼
┌──────────────────────┐
│ Response Formatter │
│ • JSON Serialization│
│ • Error Handling │
└──────────┬───────────┘
│ 5. HTTP Response
▼
┌──────────────────────┐
│ Client │
│ • Update State │
│ • Re-render UI │
└──────────────────────┘Core Subsystems
Authentication & Authorization System
┌──────────────────────────────────────────────┐ │ Authentication Flow │ ├──────────────────────────────────────────────┤ │ │ │ Login Request → Database Query │ │ ↓ │ │ Password Verification (bcrypt) │ │ ↓ │ │ JWT Token Generation │ │ ↓ │ │ Token Storage (Client) │ │ ↓ │ │ Subsequent Requests (with token) │ │ ↓ │ │ Token Extraction & Verification │ │ ↓ │ │ Role-based Access Control │ │ │ └──────────────────────────────────────────────┘
Model Deployment Pipeline
┌─────────────────────────────────────────────────┐ │ Deployment Pipeline │ ├─────────────────────────────────────────────────┤ │ │ │ 1. User selects model & configuration │ │ ↓ │ │ 2. Validation (instance type, region, etc.) │ │ ↓ │ │ 3. Dry run simulation (optional) │ │ ↓ │ │ 4. Platform-specific deployment: │ │ ┌──────────────────────────────────┐ │ │ │ Bedrock: Verify model access │ │ │ │ SageMaker: Create infrastructure │ │ │ │ NVIDIA NIM: Verify API access │ │ │ └──────────────────────────────────┘ │ │ ↓ │ │ 5. Database record creation │ │ ↓ │ │ 6. Model configuration setup │ │ ↓ │ │ 7. Status monitoring (polling) │ │ ↓ │ │ 8. Ready for chat interactions │ │ │ └─────────────────────────────────────────────────┘
Conversation & Chat System
┌─────────────────────────────────────────────────┐ │ Chat Interaction Flow │ ├─────────────────────────────────────────────────┤ │ │ │ User Message → API Endpoint │ │ ↓ │ │ Load Conversation Thread from DB │ │ ↓ │ │ Retrieve System Prompt │ │ ↓ │ │ Build Context (system + history + new msg) │ │ ↓ │ │ Platform-specific API call: │ │ ┌──────────────────────────────────┐ │ │ │ Bedrock: InvokeModel │ │ │ │ SageMaker: InvokeEndpoint │ │ │ │ NVIDIA NIM: /v1/chat/completions │ │ │ └──────────────────────────────────┘ │ │ ↓ │ │ Parse Response & Extract Tokens │ │ ↓ │ │ Calculate Cost (tokens × pricing) │ │ ↓ │ │ Update Thread in DB: │ │ • Append user & assistant messages │ │ • Update token counters │ │ • Update cost totals │ │ • Update request count │ │ ↓ │ │ Return Response to Client │ │ │ └─────────────────────────────────────────────────┘
Data Flow Patterns
Read Path (Data Retrieval)
- Optimized for fast reads with indexed queries
- JSONB columns for flexible metadata retrieval
- Aggregated statistics computed at write time
- Pagination support for large datasets
Write Path (Data Persistence)
- Transactional writes for data consistency
- Atomic updates for conversation threads
- Denormalized fields for query performance
- Timestamp tracking (created_at, updated_at)
Scalability Architecture
Horizontal Scaling
- Stateless API Layer: Next.js API routes can be deployed across multiple instances
- Database Connection Pooling: Efficiently manages concurrent connections
- CDN for Static Assets: Reduces load on application servers
- Load Balancing: Distributes traffic across application instances
Vertical Scaling
- Database Resources: Increase CPU, memory, and storage as needed
- Connection Pool Size: Adjust based on concurrent user load
- Application Instance Size: Scale compute resources for API layer
Resilience & Fault Tolerance
Error Handling Strategy
try {
// API operation
const result = await performOperation()
return { success: true, data: result }
} catch (error) {
// Log error details
console.error('Operation failed:', error)
// Return standardized error response
return {
success: false,
error: 'User-friendly error message',
details: error.message // For debugging
}
}Failure Recovery
- Database Reconnection: Automatic retry with exponential backoff
- AWS API Retries: Built-in SDK retry logic with exponential backoff
- Transaction Rollback: Failed operations don't leave partial state
- Graceful Degradation: System continues to function even if some features fail
🔍 Performance Metrics
Target Performance:
- API Response Time: < 200ms (excluding AI model latency)
- Database Query Time: < 50ms
- AI Model Response: 0.5-3 seconds (varies by model)
- Page Load Time: < 1 second (first contentful paint)
- Concurrent Users: 1000+ (with proper scaling)