Welcome to Nexus Platform Documentation¶

What is Nexus?¶

Nexus is the ultimate plugin-based application platform that enables developers to build modular, scalable applications with unprecedented ease. Built on FastAPI and designed with enterprise needs in mind, Nexus transforms how you architect and deploy modern applications.

🎯 Core Philosophy¶

Nexus is built on the principle that everything is a plugin. This fundamental design decision shapes every aspect of the architecture:

• Modularity First: Features are isolated, independent components
• Event-Driven: Loose coupling through asynchronous communication
• Service-Oriented: Shared functionality through service registry
• Configuration-Driven: Behavior controlled through declarative config

🏗️ Architecture Overview¶

Nexus Platform is designed around a plugin-first architecture that enables maximum modularity and extensibility:

graph TB
    subgraph "Application Layer"
        A[FastAPI Application]
        B[Plugin Manager]
        C[Event System]
        D[Service Registry]
    end

    subgraph "Core Plugins"
        E[Authentication]
        F[Database]
        G[Admin Interface]
        H[User Management]
    end

    subgraph "Custom Plugins"
        I[Business Logic]
        J[Integrations]
        K[Custom APIs]
        L[Background Tasks]
    end

    subgraph "Infrastructure"
        M[(Database)]
        N[Cache Layer]
        O[Message Queue]
        P[File Storage]
    end

    A --> B
    B --> E
    B --> F
    B --> G
    B --> H
    B --> I
    B --> J
    B --> K
    B --> L

    E --> M
    F --> M
    G --> N
    H --> M
    I --> O
    J --> P

    C -.-> E
    C -.-> F
    C -.-> G
    C -.-> I

    D --> E
    D --> F
    D --> I
    D --> J

🚀 Quick Start¶

Get up and running in minutes:

# Install Nexus Platform
pip install nexus-platform

# Verify installation
nexus --version

# Create new project directory
mkdir my-nexus-app
cd my-nexus-app

# Initialize Nexus project structure
nexus init

# Creates: main.py, nexus_config.yaml, plugins/, config/, logs/

# Run the initialized application
python main.py

# Or use the CLI
nexus run

🔧 Core Features¶

Plugin System¶

Everything in Nexus is a plugin, providing:

• Modularity: Independent, reusable components
• Extensibility: Easy to add new functionality
• Maintainability: Clear separation of concerns
• Testing: Isolated testing of individual features

Event-Driven Architecture¶

Loose coupling through a powerful event system:

• Asynchronous: Non-blocking event processing
• Scalable: Handle thousands of events per second
• Flexible: Custom event types and handlers
• Reliable: Built-in error handling and retries

Service Registry¶

Shared functionality across plugins:

• Dependency Injection: Automatic service resolution
• Lifecycle Management: Proper initialization and cleanup
• Configuration: Centralized service configuration
• Health Checks: Built-in service monitoring

📖 Documentation Sections¶

🎯 Common Tasks¶

I want to...¶

🛠️ Development Workflow¶

graph LR
    A[Install] --> B[Initialize Project]
    B --> C[Quick Start]
    C --> D[First Plugin]
    D --> E[Configuration]
    E --> F[Advanced Plugins]
    F --> G[Production Deploy]

    subgraph "Development Cycle"
        H[Write Code] --> I[Test Locally] --> J[Debug] --> H
    end

    F --> H
    G --> I

    subgraph "Learning Path"
        K[Getting Started]
        L[Plugin Development]
        M[Architecture]
        N[Deployment]
    end

    C --> K
    D --> L
    F --> M
    G --> N

🌟 Why Choose Nexus?¶

For Developers¶

• Rapid Development: Built-in tools and generators
• Type Safety: Full TypeScript-style type hints
• Testing: Comprehensive testing utilities
• Documentation: Auto-generated API docs

For Teams¶

• Collaboration: Clear plugin boundaries
• Scalability: Horizontal and vertical scaling
• Maintainability: Modular architecture
• Standards: Built-in best practices

For Enterprises¶

• Security: Enterprise-grade authentication
• Monitoring: Built-in observability
• Deployment: Container-ready
• Support: Professional support available

📊 Learning Path¶

Beginner Path (Start Here!)¶

1. Installation - Install Nexus Platform
2. Quick Start - Initialize and build your first app
3. First Plugin - Create a custom plugin
4. Configuration - Configure your app

Intermediate Path¶

1. Plugin Basics - Deep dive into plugins
2. API Routes - Create REST endpoints
3. Database Integration - Work with databases
4. Event System - Use event-driven patterns

Advanced Path¶

1. Architecture Overview - System design
2. Plugin Testing - Test your plugins
3. Production Deployment - Deploy to production
4. Advanced Plugins - Complex plugin patterns

🤝 Community & Support¶

• GitHub: nexus-platform
• Discord: Join our community
• Documentation: You're here! 📚
• Issues: Report bugs

📄 License¶

Nexus Platform is released under the MIT License.