We will build a BookStore Application using Spring Boot, Spring Cloud, and Docker.
BookStore Microservices Architecture
Modules
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catalog-service: This services provides REST API for managing catalog of products(books).
TechStack: Spring Boot, Spring Data JPA, PostgreSQL
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order-service: This service provides the REST API for managing orders and publishes order events to the message broker.
TechStack: Spring Boot, Spring Rest API's, Spring Security OAuth2, Keycloak, Spring Data JPA, PostgreSQL, RabbitMQ
-
notification-service: This service listens to the order events and sends notifications to the users.
TechStack: Spring Boot, RabbitMQ
-
api-gateway: This service is an API Gateway to the internal backend services (catalog-service, order-service).
TechStack: Spring Boot, Spring Cloud Gateway
-
bookstore-webapp: This is the customer facing web application where customers can browse the catalog, place orders, and view their order details.
TechStack: Spring Boot, Spring Security OAuth2, Keycloak, Thymeleaf, Alpine.js, Bootstrap
Learning Objectives
- Building Spring Boot REST APIs
- Database Persistence using Spring Data JPA, PostgreSQL, Flyway
- Event Driven Async Communication using RabbitMQ
- Implementing OAuth2-based Security using Spring Security and Keycloak
- Implementing API Gateway using Spring Cloud Gateway
- Implementing Resiliency using Resilience4j
- Job Scheduling with ShedLock-based distributed Locking
- Using RestClient, Declarative HTTP Interfaces to invoke other APIs
- Creating Aggregated Swagger Documentation at API Gateway
- Local Development Setup using Docker, Docker Compose and Testcontainers
- Testing using JUnit 5, RestAssured, Testcontainers, Awaitility, WireMock
- Building Web Application using Thymeleaf, Alpine.js, Bootstrap
- Monitoring & Observability using Grafana, Prometheus, Loki, Tempo
- Kubernetes Basics
- Deployment to Kubernetes
- Local Development Setup
- Install Java 21. Recommend using SDKMAN for managing Java versions.
- Install Docker Desktop
- Install IntelliJ IDEA or any of your favorite IDE
- Install Postman or any REST Client
- Other Learning Resources