quaex

Quaex System Architecture

Enterprise Asset & Inventory Management System
by Karosuru from Athato

Overview

Quaex is a comprehensive enterprise-grade asset and inventory management system built with Flutter for cross-platform deployment, featuring robust security, scalability, and industrial-grade compliance capabilities.

Architecture Principles

1. Enterprise-Grade Security

Zero Trust Architecture: Every request is authenticated and authorized
End-to-End Encryption: All data transmission encrypted using TLS 1.3+
Role-Based Access Control (RBAC): Granular permissions system
Audit Trail: Complete logging of all system actions
Industrial Cyber Security: Compliance with IEC 62443 standards

2. Scalable Microservices Design

Event-Driven Architecture: Asynchronous communication patterns
Database Per Service: Independent data management
API Gateway: Centralized request routing and security
Load Balancing: Auto-scaling capabilities
Circuit Breaker Pattern: Fault tolerance and resilience

3. Cross-Platform Deployment

Flutter Framework: Single codebase for mobile, web, and desktop
Progressive Web App (PWA): Offline-first capabilities
Native Performance: Optimized rendering and processing
Responsive Design: Adaptive UI for all screen sizes

System Components

Frontend Architecture

1. Flutter Application Layer

lib/
├── main.dart                 # Application entry point
├── core/                     # Core functionality
│   ├── config/              # Configuration management
│   ├── router/              # Navigation routing
│   ├── theme/               # UI theming system
│   ├── services/            # Business services
│   └── providers/           # State management
├── features/                # Feature-based modules
│   ├── auth/                # Authentication system
│   ├── inventory/           # Inventory management
│   ├── assets/              # Asset tracking
│   ├── scanner/             # QR/Barcode scanning
│   ├── dashboard/           # Analytics dashboard
│   └── workspace/           # Multi-tenant workspace
├── shared/                  # Shared components
└── utils/                   # Utility functions

2. State Management Architecture

Riverpod: Reactive state management with compile-time safety
Provider Pattern: Dependency injection and service location
State Normalization: Efficient data structure management
Caching Strategy: Intelligent data persistence and sync

Go Router: Declarative routing with deep linking
Authentication Guards: Route protection based on user roles
Dynamic Routes: Context-aware navigation paths
State Preservation: Maintains UI state across navigation

Backend Architecture

1. Supabase Backend Infrastructure

Backend Services/
├── Authentication Service    # User management and security
├── Database Service         # PostgreSQL with RLS
├── Storage Service          # File and media management
├── Real-time Service        # Live data synchronization
├── Edge Functions          # Serverless business logic
└── API Gateway             # Request routing and rate limiting

2. Database Schema Design

Multi-Tenant Architecture: Workspace isolation
Normalized Relations: Optimized data integrity
Row Level Security (RLS): Database-level access control
Audit Tables: Change tracking and compliance
Indexing Strategy: Performance optimization

3. Real-Time Synchronization

WebSocket Connections: Live data updates
Conflict Resolution: CRDT-based data consistency
Offline Support: Local-first data management
Sync Strategies: Intelligent data reconciliation

Security Architecture

1. Authentication & Authorization

Multi-Factor Authentication (MFA): Enhanced security
JWT Token Management: Secure session handling
OAuth2/OpenID Connect: Standard identity protocols
Session Management: Secure token lifecycle
Password Policies: Enterprise-grade requirements

2. Data Protection

Encryption at Rest: AES-256 database encryption
Encryption in Transit: TLS 1.3 for all communications
Key Management: Secure cryptographic key handling
Data Loss Prevention (DLP): Sensitive data protection
GDPR Compliance: Privacy regulation adherence

3. Network Security

Web Application Firewall (WAF): Attack prevention
DDoS Protection: Availability assurance
IP Whitelisting: Access restriction capabilities
VPN Integration: Secure corporate network access
Certificate Management: SSL/TLS certificate lifecycle

Industrial Cyber Security Compliance

1. IEC 62443 Implementation

Security Levels (SL): Graduated protection implementation
Zone and Conduit Model: Network segmentation strategy
Risk Assessment Framework: Continuous threat evaluation
Incident Response Plan: Structured security event handling

2. Industrial IoT Integration

OT/IT Convergence: Operational technology integration
SCADA Compatibility: Industrial control system support
Edge Computing: Local processing capabilities
Industrial Protocols: Modbus, OPC-UA, MQTT support

Data Management

1. Master Data Management

Asset Registry: Centralized asset database
Location Hierarchy: Multi-level organizational structure
Category Management: Standardized classification system
Vendor Database: Supplier relationship management

2. Inventory Tracking

Real-Time Stock Levels: Live inventory monitoring
Automated Reordering: Smart procurement triggers
Serial Number Tracking: Individual item identification
Batch Management: Lot tracking and traceability

3. Asset Lifecycle Management

Procurement Workflow: Purchase request automation
Maintenance Scheduling: Preventive maintenance planning
Depreciation Tracking: Financial asset management
Disposal Process: End-of-life asset handling

Integration Architecture

1. Enterprise Resource Planning (ERP)

SAP Integration: Standard enterprise connectivity
Oracle EBS Support: Legacy system compatibility
REST/GraphQL APIs: Modern integration protocols
Data Mapping: Flexible field transformation

2. Internet of Things (IoT)

Sensor Data Ingestion: Real-time monitoring capabilities
Edge Device Management: Distributed sensor networks
Predictive Analytics: AI-driven maintenance insights
Alert Systems: Automated threshold notifications

3. Third-Party Services

Barcode/QR Code Services: External scanning APIs
Shipping Integration: Logistics provider connectivity
Payment Processing: Financial transaction handling
Notification Services: Multi-channel communication

Scalability & Performance

1. Horizontal Scaling

Container Orchestration: Kubernetes deployment
Auto-Scaling Groups: Dynamic resource allocation
Load Balancer Configuration: Traffic distribution
Database Sharding: Distributed data architecture

2. Performance Optimization

Caching Layers: Redis for high-performance access
CDN Integration: Global content delivery
Image Optimization: Responsive media handling
Lazy Loading: Progressive data fetching

3. Monitoring & Observability

Application Performance Monitoring (APM): Real-time metrics
Distributed Tracing: Request flow analysis
Health Checks: System availability monitoring
Custom Dashboards: Business intelligence views

Deployment Architecture

1. Multi-Environment Strategy

Development Environment: Feature development and testing
Staging Environment: Pre-production validation
Production Environment: Live system deployment
Disaster Recovery: Backup and failover capabilities

2. CI/CD Pipeline

Automated Testing: Unit, integration, and E2E tests
Security Scanning: Vulnerability assessment
Code Quality Gates: Static analysis requirements
Blue-Green Deployment: Zero-downtime releases

3. Infrastructure as Code

Terraform Provisioning: Declarative infrastructure
Docker Containerization: Consistent deployment packages
Kubernetes Orchestration: Container management
GitOps Workflow: Configuration version control

Business Continuity

1. Disaster Recovery Plan

Recovery Time Objective (RTO): < 4 hours
Recovery Point Objective (RPO): < 1 hour
Backup Strategies: Multiple recovery points
Failover Procedures: Automated disaster response

2. High Availability Design

99.9% Uptime SLA: Service level guarantee
Redundant Systems: Eliminate single points of failure
Geographic Distribution: Multi-region deployment
Health Monitoring: Proactive issue detection

Compliance & Governance

1. Regulatory Compliance

SOX Compliance: Financial reporting requirements
ISO 27001: Information security management
NIST Framework: Cybersecurity best practices
Industry Standards: Sector-specific requirements

2. Data Governance

Data Classification: Sensitivity level categorization
Retention Policies: Automated lifecycle management
Access Auditing: Comprehensive usage tracking
Privacy Controls: User consent management

Future Roadmap

1. Artificial Intelligence Integration

Machine Learning Models: Predictive maintenance algorithms
Natural Language Processing: Intelligent search capabilities
Computer Vision: Automated asset identification
Anomaly Detection: AI-powered security monitoring

2. Advanced Analytics

Business Intelligence: Advanced reporting capabilities
Predictive Analytics: Forecasting and trend analysis
Real-Time Dashboards: Live operational insights
Custom Report Builder: User-defined analytics

3. Extended Reality (XR)

Augmented Reality (AR): Asset visualization overlays
Virtual Reality (VR): Immersive training environments
Mixed Reality (MR): Enhanced maintenance procedures
Digital Twins: Virtual asset representations

Document Version: 1.0
Last Updated: 2025-01-21
Next Review: 2025-04-21

This document serves as the master architecture reference for the Quaex enterprise system and should be reviewed quarterly to ensure alignment with evolving business requirements and technology advances.