# 🏗️ Architecture

**Architecture Overview**







**Monorepo Structure**







**Technology Stack**







**Backend Architecture**







**Frontend Architecture**







**Worker Architecture**







**Multi-ORM Architecture**







**Plugins & Integrations System**







**Event Bus**







**File Storage**







**Multi-Tenancy**







**Design Principles**







**Microservices & Applications**







**Request Lifecycle**







**Guard & Interceptor Chain**







**Database Migration Guide**







**Entity Inheritance Hierarchy**







**Seed Data Architecture**







**WebSocket & Real-Time Architecture**







**Configuration System**







**Error Handling Architecture**







**Decorator System Reference**







**Background Job Architecture**







**Module Dependency Graph**







**Multi-Tenant Data Flow**







**Audit Logging Architecture**







**WebSocket Architecture**







**Guard System Deep Dive**







**Interceptor Patterns**







**CQRS Pattern**







**GraphQL API Overview**







**Redis Caching Architecture**







**Service Layer Patterns**







**Repository Pattern**







**DTO Design Patterns**







**Middleware Patterns**







**Scheduler Architecture**







**Notification Architecture**







**Pipe Validation Deep Dive**