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Event-Driven Architecture in Golang

Gain insights into event-driven architecture in Golang. Delve into EDA concepts, explore real-time interactions through examples, and discover how to transition from synchronous to asynchronous communication mechanisms.

Intermediate

138 Lessons

35h

Certificate of Completion

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Explanations

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Explanations

This course includes

1 Project

9 Playgrounds

13 Quizzes

Course Overview

What You'll Learn

Course Content

Recommendations

Course Overview

Event-driven architecture (EDA) is an architecture that helps organizations decouple microservices and avoid developing another distributed monolith. Companies are adopting event-driven architecture (EDA) as their web applications grow in size and complexity. Adding or developing your application around real-time interactions becomes easier with EDA. Choosing a new architecture for your next application or deciding to refactor an existing one can be fraught with known and unknown challenges. In this cours...Show More

What You'll Learn

Basic understanding of the benefits of event-driven architecture (EDA) in decoupling microservices and how to avoid distributed monoliths

An understanding of how event-driven architecture (EDA) facilitates easier development, scalability, and real-time interactions in web applications

Familiarity with the challenges associated with choosing a new architecture or refactoring existing applications and learning strategies for overcoming these challenges

Hands-on experience implementing event-driven architecture (EDA) in microservices-based applications through a modular monolith demonstration application

Basic understanding of the benefits of event-driven architecture (EDA) in decoupling microservices and how to avoid distributed monoliths

Course Content

Overview

1 Lessons

Get familiar with event-driven architecture in Go for microservices and practical insights.

About This Course

Introduction to Event-Driven Architectures

8 Lessons

Look at Event-Driven Architecture’s concepts, patterns, core components, and implementation challenges.

Introduction

EDA Patterns

EDA Core Components

The MallBots Application

Benefits of EDA

Challenges of EDA

Summary

Quiz: Event-Driven Architecture

Supporting Patterns in Brief

10 Lessons

Break apart event-driven architecture patterns, Domain-Driven Design principles, and effective application strategies.

Introduction

Domain-Driven Design

All About DDD

Modeling and Key Patterns of DDD

Architectural Evolution: Traditional to Domain-Centric

Hexagonal Architecture: Testing and Adaptation Strategies

Command and Query Responsibility Segregation

Application Architectures

Summary

Quiz: Supporting Patterns

Design and Planning

13 Lessons

Break down complex ideas with EventStorming, DDD, BDD, and recording architectural decisions.

Introduction

EventStorming

Big Picture EventStorming

Steps One and Two: Kick-Off and Chaotic Exploration

Step Three: Enforcing the Timeline

Step Four: People and Systems

Step Five: Explicit Walkthrough

Final Step: Problems and Opportunities

Design-Level EventStorming

Understanding the Business

Recording Architectural Decisions

Summary

Quiz: Design and Planning

Event Foundations

11 Lessons

Take a closer look at event-driven design and modular monolith architecture in Golang.

Introduction

A Tour of MallBot

Module Code Organization

Domain Events: Efficient System Adaptation

Domain Events Optimization: Handling Efficiency

Summary

Quiz: Event Foundations

Tracking Changes with Event Sourcing

14 Lessons

Focus on mastering event sourcing in Golang, including implementation, CQRS, snapshots, and domain events.

Introduction

Event Sourcing

Adding Event Sourcing to the Monolith

Updating the Monolith Modules

Adding the Event Sourcing Package

Aggregate Repositories and Event Stores

Implementing the Event Store

Using Just Enough CQRS: A Group of Stores

Using Just Enough CQRS: A Group of Products

Connecting the Domain Events with the Read Model

Aggregate Event Stream Lifetimes

Using Snapshots

Summary

Quiz: Tracking Changes with Event Sourcing

Asynchronous Connections

14 Lessons

Master the steps to implementing asynchronous communication in Golang using NATS JetStream.

Introduction

Asynchronous Integration with Messages

Event Integration with Notification Events and State Transfer

Eventual Consistency

Message Delivery Guarantees

Message Delivery: Idempotent Messages

Message Delivery: Ordered Messages

Implementing Messaging with NATS JetStream

The am and jetstream Packages

Making the Store Management Module Asynchronous

Publishing Messages From the Store Management Module

Receiving Messages in the Shopping Baskets Module

Summary

Quiz: Asynchronous Connections

Event-Carried State Transfer

10 Lessons

Step through event-carried state transfer to enhance module independence and efficient communication.

Chapter’s Introduction

Enhancing Module Interaction: Async API Implementation

Enhancing Resilience with Async Fallbacks

Customer State Transfer

Order Processing and Payments State Transfer

Documenting the Asynchronous API

Adding a New Order Search Module

Building Read Models from Multiple Sources

Summary

Quiz: Event-Carried State Transfer

Message Workflows

12 Lessons

Walk through methods for distributed workflows, including 2PC, sagas, and orchestrated operations.

Introduction

Distributed Transaction

Comparing Various Methods of Distributed Transactions

Types of Sagas

Implementing Distributed Transactions with Sagas

SEC Package Addition and Order Creation Process Conversion

The Customers Module

The Depot, Order Processing, and Payments Modules

Implementation of the Create Order Saga Execution Coordinator

Enhancing Order Processing with Orchestrated Sagas

Summary

Quiz: Message Workflows

10.

Transactional Messaging

10 Lessons

Work your way through enhancing transactional messaging, DI management, and message deduplication in Golang.

Introduction

Identifying Problems Faced by Distributed Applications

Exploring Transactional Boundaries

Setting Up a Container

Dependency Injection for Modules Using Containers

Transactional DI: Adapter and Handler Optimization

Using an Inbox for Messages

Using an Outbox for Messages

Summary

Quiz: Transactional Messaging

11.

Testing

15 Lessons

Enhance your skills in testing event-driven applications with unit, integration, and contract tests.

Chapter’s Introduction

Coming Up with a Testing Strategy

Testing the Application and Domain with Unit Tests

Creating and Using Test Doubles in Our Tests

Testing Dependencies with Integration Testing

Testing ProductCacheRepository

Breaking Tests into Groups

Testing Component Interactions with Contract Tests

Contract Testing with Pact

REST Consumer and Provider Example

Message Consumer and Provider Example

Testing the Application with End-to-End Tests

Making Executable Specifications Out of Our Features

Summary

Quiz: Testing

12.

Deploying Applications to the Cloud

11 Lessons

Solve problems in cloud deployment, transforming monoliths to microservices with AWS tools.

Introduction

Turning the Modular Monolith into Microservices

Updating the Composition Root of Each Module

Updates to the Dockerfile Build Processes

Adding a Reverse Proxy to the Compose Environment

The Necessary DevOps Tools

Using Terraform to Configure an AWS Environment

Deploying the Infrastructure

Deploying the Application to AWS with Terraform

Summary

Quiz: Deploying Applications to the Cloud

Application Deployment on AWS with Terraform

Project

14.

Monitoring and Observability

7 Lessons

Follow the process of enhancing observability using OpenTelemetry, Prometheus, Jaeger, and Grafana.

Introduction

What are Monitoring and Observability?

Instrumenting the Application with OpenTelemetry and Prometheus

Adding Metrics to the Application

Viewing the Monitoring Data

Summary

Quiz: Monitoring and Observability

15.

Appendix

2 Lessons

Piece together the parts of setting up the local environment and DevOps tools.

Setting Up the Local Environment

Installing the Necessary DevOps Tools

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