Node.js: Microservices

Introduction

• Understanding how microservices are built and used
• What you should know

1. 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

2. 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

3. 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

4. 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

5. 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

6. 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

7. 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