We saw the motivations, challenges, and benefits of distributed systems, as well as some approaches to handle communication and consistency. Now we will focus on the architecture of distributed applications.
- Preface
- Introduction
- Designing and Structuring Java Enterprise Applications
- The purpose of enterprise applications
- Outer enterprise project structure
- Enterprise project code structure
- Summary
- Implementing Modern Java Enterprise Applications
- Use case boundaries
- Core domain components of modern Java EE
- Patterns in Java EE
- External and cross-cutting concerns in enterprise applications
- Flow of execution
- Concepts and design principles of modern Java EE
- Preserving maintainable code with high quality
- Summary
- Lightweight Java EE
- Container and Cloud Environments with Java EE
- Motivations and goals
- Containers
- Java EE in the container
- Container orchestration frameworks
- Realizing container orchestration
- Java EE in orchestrated containers
- 12-factor applications and Java EE
- Have one codebase tracked in revision control, many deploys
- Explicitly declare and isolate dependencies
- Store config in the environment
- Treat backing services as attached resources
- Strictly separate build and run stages
- Execute the app as one or more stateless processes
- Export services via port binding
- Scale out via the process model
- Maximize robustness with fast startup and graceful shutdown
- Keep development, staging, and production as similar as possible
- Treat logs as event streams
- Run admin/management tasks as one-off processes
- Cloud, Cloud native, and their benefits
- Summary
- Application Development Workflows
- Motivation and goals of productive development workflows
- Realizing development workflows
- Workflows with Java EE
- Continuous Delivery culture and team habits
- Summary
- Testing
- The necessity of tests
- Requirements of well-crafted tests
- What to test
- Definition of test scopes
- Implementing tests
- Running tests locally
- Maintaining test data and scenarios
- Summary
- Microservices and System Architecture
- Motivations behind distributed systems
- Challenges of distribution
- How to design systems landscapes
- How to design system interfaces
- Event sourcing, event-driven architectures, and CQRS
- Communication
- Microservice architectures
- Implementing microservices with Java EE
- Summary
- Monitoring, Performance, and Logging
- Security
- Conclusion
- Appendix: Links and further resources
Microservice architectures
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