Book Image

Event-Driven Architecture in Golang

By : Stack
5 (1)
Book Image

Event-Driven Architecture in Golang

5 (1)
By: 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)
1
Part 1: Event-Driven Fundamentals
5
Part 2: Components of Event-Driven Architecture
12
Part 3: Production Ready

Using Terraform to configure an AWS environment

The MallBots application is going to be run from AWS Elastic Kubernetes Service (EKS), a managed Kubernetes environment. The IaC to create the infrastructure is going to be found in the /deployment/infrastructure directory.

We will be configuring a small typical AWS environment across two Availability Zones (AZs):

Figure 11.5 – Our AWS infrastructure

In the infrastructure directory, there are several Terraform files. Altogether, they are going to be used to set up the following in AWS:

  • Docker repositories with Elastic Container Service (ECS). We will be uploading the built microservice images here.
  • A Kubernetes cluster in EKS. We will be deploying our application here from images stored in ECS.
  • A PostgreSQL database using Relational Database Service (RDS). A single instance will serve all of the microservice databases and schemas.
  • Additional components such as a Virtual Private Cloud...