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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

Testing the application with end-to-end tests

The final form of testing we will cover is end-to-end (E2E) testing. E2E testing will encompass the entire application, including third-party services, and have nothing replaced with any test doubles. The tests should cover all of the processes in the application, which could result in very large tests that take a long time to complete:

Figure 10.11 – The scope of an end-to-end test

E2E testing takes many forms, and the one we will be using is a features-based approach. We will use Gherkin, introduced in Chapter 3, Design and Planning, to write plain text scenarios that should cover all essential flows throughout the application.

Relationship with behavior-driven development

You can do behavior-driven development (BDD) without also doing E2E testing, and vice versa. These two are sometimes confused with each other or it’s thought that they are the same. BDD, as a practice, can be used at all...

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