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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

Testing an event-driven application is no harder than testing a monolithic application when you have a good testing strategy. In this chapter, we covered the application, domain, and business logic using unit tests. These tests make up the bulk of our testing force. We follow up our unit tests with integration tests, which help uncover issues with how our components interact. Using tools such as Testcontainers-Go can help reduce the effort required to run the tests, and using libraries such as the Testify suite can help reduce the test setup and teardown complexities.

A distributed application, whether it is event-driven like ours or synchronous, gains a lot from including contract testing in the testing strategy. Having confidence in how you are using or have made expectations of a provider without the mess and complexities of standing the provider up is a time saver many times over. Finally, including E2E testing in any form will give the team and stakeholders confidence...

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