# Technology Stack

## Backend

### Core Framework
- Java 17+ (JDK 17/21)
- Spring Boot 3.5.x
- Maven (multi-module project)

### Database & ORM
- MySQL 5.7/8.0+ (primary), also supports PostgreSQL, Oracle, SQL Server, DM, KingBase, OpenGauss
- MyBatis Plus 3.5.x (ORM)
- Druid (connection pool & monitoring)
- Dynamic Datasource (multi-datasource/read-write splitting)

### Cache & Messaging
- Redis + Redisson
- Message queues: Redis Stream, RabbitMQ, RocketMQ, Kafka

### Security & Auth
- Spring Security + Token + Redis
- SSO single sign-on support
- Multi-tenant architecture

### Workflow
- Flowable 7.x (BPM engine)

### Scheduling
- Quartz (distributed job scheduling)

### API Documentation
- Springdoc + Knife4j (Swagger UI)

### Code Quality
- Lombok (boilerplate reduction)
- MapStruct (object mapping)
- JUnit 5 + Mockito (testing)

## Frontend (Vue3 Admin)

### Core
- Vue 3.5.x + TypeScript
- Vite 5.x (build tool)
- Element Plus 2.x (UI framework)
- Pinia (state management)
- Vue Router 4.x

### Build & Quality
- pnpm (package manager)
- ESLint + Prettier + Stylelint
- UnoCSS (atomic CSS)

## Common Commands

### Backend
```bash
# Install dependencies and build all modules
mvn clean install -DskipTests

# Run backend server (development)
./start-backend.sh local

# Or manually with Maven
cd yudao-server
mvn spring-boot:run -Dspring-boot.run.profiles=local

# Run tests
mvn test

# Package for production
mvn clean package -DskipTests
```

### Frontend (yudao-ui/yudao-ui-admin-vue3)
```bash
# Install dependencies
pnpm install

# Development server
pnpm dev

# Build for production
pnpm build:prod

# Lint code
pnpm lint:eslint
pnpm lint:format
```

## Server Ports
- Backend API: `http://localhost:48080`
- API Documentation: `http://localhost:48080/doc.html`
- Druid Monitor: `http://localhost:48080/druid`