Unit 907: Software Architecture and Design

1. Introduction to Software Architecture and Design

• Definition and scope of software architecture
• Key design principles overview
• Importance of good architecture in software projects
• Role of architecture in project success and maintenance

2. Architectural Styles and Patterns

2.1 Common Architectural Styles

• Client-server architecture
• Layered (n-tier) architecture
• Microservices architecture

2.2 Design Patterns

• Model-View-Controller (MVC)
• Observer pattern
• Singleton pattern

2.3 Applying Styles and Patterns

• Use cases and benefits
• Trade-offs and challenges

3. Design Principles and Best Practices

3.1 SOLID Principles

• Single Responsibility Principle
• Open-Closed Principle
• Liskov Substitution Principle
• Interface Segregation Principle
• Dependency Inversion Principle

3.2 Additional Principles

• DRY (Don't Repeat Yourself)
• KISS (Keep It Simple, Stupid)

3.3 Best Practices

• Writing maintainable code
• Designing for scalability
• Code readability and documentation

4. Software Design Models

4.1 Introduction to UML

• Purpose and benefits of UML

4.2 UML Diagrams

• Class diagrams: structure and relationships
• Sequence diagrams: object interactions over time
• Use case diagrams: capturing requirements

4.3 Practical Application

• Creating and interpreting UML diagrams
• Tools for UML modeling

5. Component-Based Architecture

• Definition and concepts
• Benefits: reusability, modularity, maintainability
• Designing component-based systems
• Examples and use cases

6. Designing for Scalability and Performance

• Understanding scalability: vertical vs horizontal
• Load balancing and caching strategies
• Performance optimization techniques
• Monitoring and performance tuning

7. Designing for Security and Reliability

• Importance of security in design
• Secure coding practices and threat modeling
• Designing for fault tolerance and high availability
• Strategies to minimize downtime

8. Evolutionary Architecture

• Concept and significance
• Principles of evolutionary design
• Techniques for enabling adaptability and flexibility
• Continuous integration and deployment implications

9. Case Studies in Software Architecture and Design

• Analysis of real-world software systems
• Challenges faced and solutions applied
• Lessons learned and best practices
• Discussion and critical evaluation