Node.js: Microservices

Course details

In this fast-paced era of distributed systems, mastering microservices—not just deploying services, but truly understanding the patterns and principles that drive them— is essential for developers. And in organizations large and small, Node.js is often the platform of choice for building microservices architectures. In this course, Daniel Khan shows you how to use Node.js to create a microservice architecture from scratch and tackles the all-too-common challenge of transforming a monolithic app into a flexible, modular system composed of individual services. Throughout the course, Daniel explores crucial concepts like service discovery, resilience, and decoupling. Check out this course to gain practical knowledge of microservices that you can apply to your day-to-day work immediately.

Concepts

Introduction

Understanding how microservices are built and used
What you should know

Prepare Your Development Environment

Installing Git, Node.js, and Docker
Getting the exercise files from GitHub
Setting up Visual Studio Code, ESLint, and Prettier
Launching MongoDB, Redis, and Jaeger in Docker
Installing MongoDB Compass

Planning Your Microservice Migration

Setting up and exploring your sample application
Understanding the sample apps code
Getting insights with OpenTelemetry and Jaeger
Setting your mission

Your First Service - The Catalog Service

What's your goal for this chapter
Creating the service
Designing a REST API for the catalog service
Adding business logic and database access
Creating your first REST endpoint
Completing the API
Testing REST endpoints

Creating a Service Registry

What's your goal for this chapter
Setting up the registry
Registering services
Creating and testing the registration route
Unregistering services
Querying the registry
Removing expired services
Registering on service on start
Adding heartbeat and unregistering on shutdown

Using Services

What's your goal for this chapter
Creating the service client
Using the catalog service
Testing the catalog service
Sanitizing data
Creating the CartService
Service monitoring with OpenTelemetry and Jaeger

Authenticating APIs

API authentication with JWT
Creating the user service
Add JWT tokens to the user service
Make the front end use JWT authentication
Using bearer headers
Protecting endpoints with JWT

Adding Fault Tolerance and Resilience

What's your goal for this chapter
Chaos testing
Adding caching to reduce load and bridge outages
Using queues for decoupling
Installing up RabbitMQ
Setting up the order service
Producing orders
Consuming orders

Conclusion

Next steps