# MyceliumCloud Examples Roadmap

Comprehensive progression of Kubernetes examples designed to teach MyceliumCloud deployment patterns from beginner to advanced levels.

## 📋 Examples Progression

### Completed Examples

#### 1. Hello World ✅
- **Difficulty**: ⭐ Easy
- **Status**: ✅ **COMPLETED**
- **Learning Focus**: Basic Kubernetes deployment, service creation, port-forwarding
- **Template**: Established efficient pattern with `hello-world.md` + `hello-world-deployment.yaml` + `hello-world-service.yaml`
- **Key Concepts**: Pods, Deployments, Services, LoadBalancer, port-forward

#### 2. Nginx Static Site ✅
- **Difficulty**: ⭐ Easy
- **Status**: ✅ **COMPLETED**
- **Learning Focus**: Static content serving, custom HTML, nginx configuration
- **Template**: Same efficient pattern with `nginx-static.md` + `nginx-static-deployment.yaml` + `nginx-static-service.yaml` + `default-index.html`
- **Key Concepts**: Static files, nginx deployment, custom configuration, ConfigMaps, HTML serving

#### 3. Python Flask API ✅
- **Difficulty**: ⭐ Easy-Medium
- **Status**: ✅ **COMPLETED**
- **Learning Focus**: Application containerization, Python web services
- **Template**: Same efficient pattern with `python-flask.md` + `python-flask-deployment.yaml` + `python-flask-service.yaml` + `app.py`
- **Key Concepts**: Python containers, API development, HTTP services, JSON responses, RESTful design

### Planned Examples (Future)

#### 4. Redis Cache 🔄
- **Difficulty**: ⭐⭐ Medium
- **Status**: 🔄 **NEXT UP**
- **Learning Focus**: Data storage, caching patterns, stateful services
- **Template**: Same efficient pattern
- **Key Concepts**: Redis deployment, data persistence, cache strategies
- **Next Step**: Create redis-cache directory using python-flask template

#### 4. Redis Cache
- **Difficulty**: ⭐⭐ Medium
- **Status**: 📋 Planned  
- **Learning Focus**: In-memory data storage, cache services
- **Template**: Same efficient pattern
- **Key Concepts**: Data services, Redis deployment, cache patterns

#### 5. PostgreSQL Database
- **Difficulty**: ⭐⭐ Medium
- **Status**: 📋 Planned
- **Learning Focus**: Stateful applications, database deployment
- **Template**: Same efficient pattern
- **Key Concepts**: Persistent volumes, databases, data persistence

#### 6. WordPress
- **Difficulty**: ⭐⭐⭐ Hard
- **Status**: 📋 Planned
- **Learning Focus**: Multi-container applications, CMS deployment
- **Template**: Same efficient pattern
- **Key Concepts**: Multi-container apps, database integration, CMS deployment

#### 7. Node.js API
- **Difficulty**: ⭐⭐⭐ Hard
- **Status**: 📋 Planned
- **Learning Focus**: Modern web development, API services
- **Template**: Same efficient pattern
- **Key Concepts**: JavaScript/Node.js, API development, modern frameworks

#### 8. Jenkins CI/CD
- **Difficulty**: ⭐⭐⭐ Hard
- **Status**: 📋 Planned
- **Learning Focus**: Infrastructure automation, CI/CD pipelines
- **Template**: Same efficient pattern
- **Key Concepts**: DevOps tools, automation, infrastructure as code

#### 9. Nextcloud
- **Difficulty**: ⭐⭐⭐ Very Hard
- **Status**: 📋 Planned
- **Learning Focus**: Enterprise applications, file sharing, high availability
- **Template**: Same efficient pattern
- **Key Concepts**: Enterprise deployment, file services, advanced networking

## 🎯 Learning Progression Strategy

### Easy Level (⭐)
**Focus**: Basic deployment and networking
- Hello World: Basic web app
- Nginx Static Site: Static content
- Python Flask API: Simple web service

**Skills Taught**:
- Pod creation and management
- Service types and networking
- Port-forwarding for external access
- Basic troubleshooting

### Medium Level (⭐⭐)  
**Focus**: Data services and persistence
- Redis Cache: In-memory data
- PostgreSQL Database: Persistent data

**Skills Taught**:
- Stateful vs stateless applications
- Data persistence with volumes
- Database deployment patterns
- Service discovery

### Hard Level (⭐⭐⭐)
**Focus**: Complex applications and enterprise patterns
- WordPress: Multi-container CMS
- Node.js API: Modern web development
- Jenkins CI/CD: Infrastructure automation

**Skills Taught**:
- Multi-container applications
- Complex networking patterns
- Enterprise application deployment
- DevOps and automation

### Very Hard Level (⭐⭐⭐)
**Focus**: Advanced enterprise features
- Nextcloud: Full enterprise application

**Skills Taught**:
- High availability deployment
- Enterprise application patterns
- Advanced networking and security
- Production-ready configurations

## 🏗️ Standard Template Pattern

**All examples follow the same efficient template pattern established with hello-world:**

```
📁 example-name/
├── 📄 example-name.md              ← Complete guide + troubleshooting
├── 📄 example-name-deployment.yaml ← Application logic
└── 📄 example-name-service.yaml    ← Networking configuration
```

**Template Benefits**:
- ✅ Consistent structure across all examples
- ✅ Easy to copy and adapt for new examples
- ✅ Self-contained documentation in each example
- ✅ Clear separation of concerns (app vs networking)
- ✅ Proven pattern tested and working on MyceliumCloud

## 📚 Documentation Standards

### Individual Example Structure
Each example includes:
- **Quick Start Guide** - 5-minute deployment
- **Architecture Overview** - What it does and why
- **Step-by-Step Deployment** - Copy-paste commands
- **Testing Instructions** - How to verify it works
- **Troubleshooting Section** - Common issues and solutions
- **Cleanup Instructions** - How to remove resources
- **Pro Tips** - Advanced usage and best practices

### Example Pattern Consistency
- **Easy Examples**: 30-45 minutes to complete
- **Medium Examples**: 1-2 hours to complete  
- **Hard Examples**: 2-4 hours to complete
- **Very Hard Examples**: 4+ hours to complete

## 🎓 Skills Matrix

| Example | Containers | Persistence | Multi-Container | Load Balancing | Databases | APIs | DevOps | Enterprise |
|---------|------------|-------------|-----------------|----------------|-----------|------|--------|------------|
| Hello World | ✅ | ❌ | ❌ | ✅ | ❌ | ❌ | ❌ | ❌ |
| Nginx Static | ✅ | ❌ | ❌ | ✅ | ❌ | ❌ | ❌ | ❌ |
| Python Flask | ✅ | ❌ | ❌ | ✅ | ❌ | ✅ | ❌ | ❌ |
| Redis Cache | ✅ | ❌ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| PostgreSQL | ✅ | ✅ | ❌ | ✅ | ✅ | ❌ | ❌ | ❌ |
| WordPress | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ❌ |
| Node.js API | ✅ | ❌ | ❌ | ✅ | ❌ | ✅ | ❌ | ❌ |
| Jenkins CI/CD | ✅ | ✅ | ❌ | ✅ | ❌ | ❌ | ✅ | ❌ |
| Nextcloud | ✅ | ✅ | ✅ | ✅ | ✅ | ❌ | ❌ | ✅ |

## 🚀 Next Steps

### Immediate Next Step
1. **Create Nginx Static Site example** using hello-world template
   - Copy hello-world structure
   - Adapt for nginx static content serving
   - Include custom HTML/CSS examples
   - Test end-to-end on MyceliumCloud cluster

### Development Workflow
1. **Use Template**: Copy from previous successful example
2. **Adapt Content**: Modify for specific application needs
3. **Test on Cluster**: Verify works on MyceliumCloud
4. **Document Thoroughly**: Include troubleshooting section
5. **Verify Pattern**: Ensure consistent with overall strategy

### Quality Standards
- All examples must be **end-to-end tested**
- All examples must follow the **standard template**
- All examples must include **troubleshooting sections**
- All examples must be **copy-paste ready**
- All examples must include **cleanup instructions**

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**Goal**: Provide MyceliumCloud users with a complete learning path from basic Kubernetes deployment to enterprise application management, using proven patterns and consistent documentation.