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Event-Driven Architecture in Golang

Event-Driven Architecture in Golang

By : Michael Stack
4.9 (11)
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Event-Driven Architecture in Golang

Event-Driven Architecture in Golang

4.9 (11)
By: Michael Stack

Overview of this book

Event-driven architecture in Golang is an approach used to develop applications that shares state changes asynchronously, internally, and externally using messages. EDA applications are better suited at handling situations that need to scale up quickly and the chances of individual component failures are less likely to bring your system crashing down. This is why EDA is a great thing to learn and this book is designed to get you started with the help of step-by-step explanations of essential concepts, practical examples, and more. You’ll begin building event-driven microservices, including patterns to handle data consistency and resiliency. Not only will you learn the patterns behind event-driven microservices but also how to communicate using asynchronous messaging with event streams. You’ll then build an application made of several microservices that communicates using both choreographed and orchestrated messaging. By the end of this book, you’ll be able to build and deploy your own event-driven microservices using asynchronous communication.
Table of Contents (18 chapters)
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1
Part 1: Event-Driven Fundamentals
5
Part 2: Components of Event-Driven Architecture
12
Part 3: Production Ready

Summary

In this chapter, we used event-carried state transfer to decouple modules. Modules such as Store Management and Customers were made into event producers to improve the independence of the modules by allowing them to use locally cached data, avoiding a blocking gRPC call to retrieve it. We also expanded the state that is being shared in the application. Asynchronous messaging APIs can and should be documented like synchronous APIs, and we were introduced to a couple of tools that make the task easier.

We also added a new module to add advanced search capabilities to the application. This new module utilized events from several other modules to build a new read model that can be queried in multiple different ways.

We still have some synchronous calls that we did not touch. These calls will be the focus of our next chapter, Chapter 8, Message Workflows. In that chapter, we will look at how we can send more than events, and we will send commands to other modules so that they...

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