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Event-Driven Architecture in Golang

You're reading from   Event-Driven Architecture in Golang Building complex systems with asynchronicity and eventual consistency

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Product type Paperback
Published in Nov 2022
Publisher Packt
ISBN-13 9781803238012
Length 384 pages
Edition 1st Edition
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Author (1):
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Michael Stack Michael Stack
Author Profile Icon Michael Stack
Michael Stack
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Table of Contents (18) Chapters Close

Preface 1. Part 1: Event-Driven Fundamentals
2. Chapter 1: Introduction to Event-Driven Architectures FREE CHAPTER 3. Chapter 2: Supporting Patterns in Brief 4. Chapter 3: Design and Planning 5. Part 2: Components of Event-Driven Architecture
6. Chapter 4: Event Foundations 7. Chapter 5: Tracking Changes with Event Sourcing 8. Chapter 6: Asynchronous Connections 9. Chapter 7: Event-Carried State Transfer 10. Chapter 8: Message Workflows 11. Chapter 9: Transactional Messaging 12. Part 3: Production Ready
13. Chapter 10: Testing 14. Chapter 11: Deploying Applications to the Cloud 15. Chapter 12: Monitoring and Observability 16. Index 17. Other Books You May Enjoy

Summary

In this chapter, we have finally achieved asynchronous communication. We covered the types of messages that are used in an event-driven application. We learned that events are messages, but messages are not always events. Messages have different kinds of delivery guarantees, and there are some important traps we need to be aware of when architecting an application with asynchronous communication patterns. NATS JetStream was introduced, and then we implemented an event stream using it as our message broker. We created integration events using protocol buffers and used the familiar event-handler patterns to both publish and receive these new types of events.

Our first asynchronous messages have been delivered from the Store Management module to the Shopping Baskets module.

In the next chapter, we will improve how we send and receive states across modules. We will create local caches of states shared between modules and begin to reduce the amount of coupling that the modules...

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