Java EE: Design Patterns and Architecture

Introduction

• Welcome
• What you should know

• Classic GOF software design patterns
• Enterprise architecture patterns

• Classic design patterns revisited
• The Singleton design pattern
• Implement a Singleton pool manager
• Advanced Singleton pattern
• Singleton pattern concurrency
• The Facade design pattern
• Implement the Facade pattern
• Advanced Facade services
• The Observer design pattern
• Implement Observer pattern
• Observer priority and qualifiers
• Asynchronous observer
• The Decorator design pattern
• Implement the Decorator pattern

• What are enterprise software patterns?
• The Dependency Injection pattern
• The Filter design pattern
• AOP: The Interceptor pattern
• AOP: Implement the Interceptor pattern
• The MVC and Front Controller patterns

• What is software architecture?
• Why do we need architecture?

• What is database-centric architecture?
• Classic three-tiered architecture
• Advantages and disadvantages

• What is domain-centric architecture?
• Modern four-layer architecture
• Types of domain architecture
• Advantages and disadvantages

• What is screaming architecture?
• Functional vs. categorical
• Advantages and disadvantages

• What is CQRS architecture?
• The three variants
• Advantages and disadvantages

• What is a monolith?
• What is a microservice?
• Advantages and disadvantages of microservices

• Next steps