Book Image

Implementing Event-Driven Microservices Architecture in .NET 7

By : Joshua Garverick, Omar Dean McIver
4 (1)
Book Image

Implementing Event-Driven Microservices Architecture in .NET 7

4 (1)
By: Joshua Garverick, Omar Dean McIver

Overview of this book

This book will guide you through various hands-on practical examples for implementing event-driven microservices architecture using C# 11 and .NET 7. It has been divided into three distinct sections, each focusing on different aspects of this implementation. The first section will cover the new features of .NET 7 that will make developing applications using EDA patterns easier, the sample application that will be used throughout the book, and how the core tenets of domain-driven design (DDD) are implemented in .NET 7. The second section will review the various components of a local environment setup, the containerization of code, testing, deployment, and the observability of microservices using an EDA approach. The third section will guide you through the need for scalability and service resilience within the application, along with implementation details related to elastic and autoscale components. You’ll also cover how proper telemetry helps to automatically drive scaling events. In addition, the topic of observability is revisited using examples of service discovery and microservice inventories. By the end of this book, you’ll be able to identify and catalog domains, events, and bounded contexts to be used for the design and development of a resilient microservices architecture.
Table of Contents (21 chapters)
1
Part 1:Event-Driven Architecture and .NET 7
6
Part 2:Testing and Deploying Microservices
12
Part 3:Testing and Deploying Microservices

Testing against containers

A full testing regime across all stages of a DevOps life cycle is not in scope for this book. However, we will walk through the technicalities of performing basic testing to prove the environment is healthy and demonstrate putting a load on the overall application. We want to show the high-scale throughput we can achieve by adopting an event-driven architecture over others.

Functionality testing

We will set up a simple test using Postman:

  1. Create a new collection, which is simply a folder to store a group of related API requests that we can execute repeatedly.
  2. Next, create a new request. Set the method type as POST and set the request URL as http://localhost:5000/send.
  3. Select the Body tab, change the format to Raw, and enter an event message in the text area. I chose to use This is a Postman test to our orchestrated environment:
Figure 6.9 – Setting up a simple Postman API request

Figure 6.9 – Setting up a simple Postman API request

  1. Make sure...