Microservices - A Practical Guide
Microservices - A Practical Guide
Principles, Concepts, and Recipes
About the Book
Microservices have many advantages: Efficiently implementing more features, bringing software into production faster, robustness and easy scalability are among them. But implementing a microservices architecture and selecting the necessary technologies are difficult challenges.
This book shows microservices recipes that architects can customize and combine into a microservices menu. In this way, the implementation of microservices can be individually adapted to the requirements of the project.
The second edition is based on the feedback about the first edition. All chapters have been clarified, updated and extended. A new chapter discusses services meshes, in particular Istio with an example application. The second edition has about 35 pages more than the first edition.
For each recipe there are suggestions for variations and combinations. Readers can experience all technologies hands-on with a demo project on GitHub. The outlook picks up on the operation of microservices and also shows how the reader can start with microservices in concrete terms.
The book provides the technical tools to implement a microservices architecture. Demo projects and suggestions for self-study will complete the book.
- 0.1 Structure of the Book
- 0.2 Target Group
- 0.3 Prior Knowledge
- 0.4 Quick Start
- 0.5 Acknowledgements
- 0.6 Website
- Part I: Principles of Microservices
- 1.1 Microservices: Definition
- 1.2 Reasons for Microservices
- 1.3 Challenges
- 1.4 Variations
- 1.5 Conclusion
2 Micro and Macro Architecture
- 2.1 Bounded Context and Strategic Design
- 2.2 Technical Micro and Macro Architecture
- 2.3 Operation: Micro or Macro Architecture?
- 2.4 Give a Preference to Micro Architecture!
- 2.5 Organizational Aspects
- 2.6 Independent Systems Architecture Principles (ISA)
- 2.7 Variations
- 2.8 Conclusion
- 3.1 Reasons for Migrating
- 3.2 A Typical Migration Strategy
- 3.3 Alternative Strategies
- 3.4 Build, Operation, and Organization
- 3.5 Variations
- 3.6 Conclusion
- Part II: Technology Stacks
- 4.1 Docker for Microservices: Reasons
- 4.2 Docker Basics
- 4.3 Docker Installation and Docker Commands
- 4.4 Installing Docker Hosts with Docker Machine
- 4.5 Dockerfiles
- 4.6 Docker Compose
- 4.7 Variations
- 4.8 Conclusion
5 Technical Micro Architecture
- 5.1 Requirements
- 5.2 Reactive
- 5.3 Spring Boot
- 5.4 Go
- 5.5 Variations
- 5.6 Conclusion
6 Self-contained Systems
- 6.1 Reasons for the Term Self-contained Systems
- 6.2 Definition
- 6.3 An Example
- 6.4 SCSs and Microservices
- 6.5 Challenges
- 6.6 Benefits
- 6.7 Variations
- 6.8 Conclusion
7 Concept: Frontend Integration
- 7.1 Frontend: Monolith or Modular?
- 7.2 Options
- 7.3 Resource-oriented Client Architecture (ROCA)
- 7.4 Challenges
- 7.5 Benefits
- 7.6 Variations
- 7.7 Conclusion
8 Recipe: Links and Client-side Integration
- 8.1 Overview
- 8.2 Example
- 8.3 Variations
- 8.4 Experiments
- 8.5 Conclusion
9 Recipe: Server-side Integration using Edge Side Includes (ESI)
- 9.1 ESI: Concepts
- 9.2 Example
- 9.3 Varnish
- 9.4 Recipe Variations
- 9.5 Experiments
- 9.6 Conclusion
10 Concept: Asynchronous Microservices
- 10.1 Definition
- 10.2 Events
- 10.3 Challenges
- 10.4 Advantages
- 10.5 Variations
- 10.6 Conclusions
11 Recipe: Messaging and Kafka
- 11.1 Message-oriented Middleware (MOM)
- 11.2 The Architecture of Kafka
- 11.3 Events with Kafka
- 11.4 Example
- 11.5 Recipe Variations
- 11.6 Experiments
- 11.7 Conclusion
12 Recipe: Asynchronous Communication with Atom and REST
- 12.1 The Atom Format
- 12.2 Example
- 12.3 Recipe Variations
- 12.4 Experiments
- 12.5 Conclusion
13 Concept: Synchronous Microservices
- 13.1 Definition
- 13.2 Benefits
- 13.3 Challenges
- 13.4 Variations
- 13.5 Conclusion
14 Recipe: REST with the Netflix Stack
- 14.1 Example
- 14.2 Eureka: Service Discovery
- 14.3 Router: Zuul
- 14.4 Load Balancing: Ribbon
- 14.5 Resilience: Hystrix
- 14.6 Recipe Variations
- 14.7 Experiments
- 14.8 Conclusion
15 Recipe: REST with Consul and Apache httpd
- 15.1 Example
- 15.2 Service Discovery: Consul
- 15.3 Routing: Apache httpd
- 15.4 Consul Template
- 15.5 Consul and Spring Boot
- 15.6 DNS and Registrator
- 15.7 Recipe Variations
- 15.8 Experiments
- 15.9 Conclusion
16 Concept: Microservices Platforms
- 16.1 Definition
- 16.2 Variations
- 16.3 Conclusion
17 Recipe: Docker Containers with Kubernetes
- 17.1 Kubernetes
- 17.2 The Example with Kubernetes
- 17.3 The Example in Detail
- 17.4 Additional Kubernetes Features
- 17.5 Recipe Variations
- 17.6 Experiments
- 17.7 Conclusion
18 Recipe: PaaS with Cloud Foundry
- 18.1 PaaS: Definition
- 18.2 Cloud Foundry
- 18.3 The Example with Cloud Foundry
- 18.4 Recipe Variations
- 18.5 Experiments
- 18.6 Serverless
- 18.7 Conclusion
- Part III: Operation
19 Concept: Operation
- 19.1 Why Operation Is Important
- 19.2 Approaches for the Operation of Microservices
- 19.3 Effects of the Discussed Technologies
- 19.4 Conclusion
20 Recipe: Monitoring with Prometheus
- 20.1 Basics
- 20.2 Metrics for Microservices
- 20.3 Metrics with Prometheus
- 20.4 Example with Prometheus
- 20.5 Recipe Variations
- 20.6 Experiments
- 20.7 Conclusion
21 Recipe: Log Analysis with the Elastic Stack
- 21.1 Basics
- 21.2 Logging with the Elastic Stack
- 21.3 Example
- 21.4 Recipe Variations
- 21.5 Experiments
- 21.6 Conclusion
22 Recipe: Tracing with Zipkin
- 22.1 Basics
- 22.2 Tracing with Zipkin
- 22.3 Example
- 22.4 Recipe Variations
- 22.5 Conclusion
23 Recipe: Service Mesh Istio
- 23.1 What Is a Service Mesh?
- 23.2 Example
- 23.3 How Istio Works
- 23.4 Monitoring with Prometheus and Grafana
- 23.5 Tracing with Jaeger
- 23.6 Visualization with Kiali
- 23.7 Logging
- 23.8 Resilience
- 23.9 Challenges
- 23.10 Benefits
- 23.11 Variations
- 23.12 Experiments
- 23.13 Conclusion
- 24 And Now What?
- Appendix A: Installation of the Environment
- Appendix B: Maven Commands
- Appendix C: Docker and Docker Compose Commands
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