Java Design Patterns

Introduction to the software development process and software architecture

• The current challenges of the software development profession
• Introduction to agile approaches
• Development of software architecture
• Continuous quality assessment process
• Role of patterns when refactoring code
• CI/CD and DevOps practices

Best Practices for Java Coding

• “SOLID” principles of R. Martins
• Rules of the “Clean Code”
• Unit tests and dependency mocking
• Static code analysis
• Review of Java code metrics
• Code audit with SonarQube
• Continuous quality control practices

GOF patterns for software design

• Presentation of the catalog of GOF patterns
• Understand the objective of GOF
• GOF creation patterns. Illustration of the most recurring patterns (Singleton, Abstract Factory, Factory Method, Builder)
• The patterns of GOF structures. Illustration of the most recurring patterns (Facade, Composite, Adapter, Proxy, Decorator, …)
• GOF behavior patterns. Illustration of the most recurring patterns (Observer, Strategy, Command, Template method, State, …)
• Know how to identify code gaps and know how to align with GOF patterns

EAP Patterns (Enterprise Application Patterns) by M. Fowler

• Presentation of M. Fowler’s catalog of EAP patterns
• Implementation of “layering” and weak coupling between modules
• Isolate transverse functions (Logging, Factories, …) in dedicated modules
• Design of the data access layer respecting the “Repository” pattern
• Design of the business layer respecting the principles of the “Domain Model” and “Domain Driven Design”
• Case study: Build multi-module Spring Boot applications while respecting the catalog of EAP patterns

Micro-service architectures

• What is a micro-services architecture
• Service composition patterns
• Implementation of Miro-services patterns with Spring Cloud
• Automatic discovery of services with Spring Cloud Eureka
• Gateway and dynamic routing with Spring Cloud Zuul
• Scalability, load distribution with Spring Cloud Ribbon
• REST client with Spring Cloud Feign