Course Outline

🔹 Day 1: Microservices Fundamentals and Spring Boot Basics

Session 1: Introduction to Microservices Architecture

• Monolith vs Microservices
• Benefits and challenges of microservices
• Key microservice principles: bounded context, single responsibility

Session 2: Getting Started with Spring Boot

• Spring Boot overview and project setup
• Building REST APIs with Spring MVC
• Spring Boot starter dependencies and auto-configuration

Session 3: Building Your First Microservice

• Creating a simple service with REST endpoints
• Data persistence with Spring Data JPA and an in-memory database
• Testing REST services with MockMvc and Postman

Lab Activities:

• Create a Spring Boot microservice with CRUD operations
• Write unit and integration tests for the service
• Explore Spring Boot Actuator for monitoring

🔹 Day 2: Service Communication, Discovery, and Configuration

Session 1: Inter-Microservice Communication

• Synchronous (REST, Feign Client) vs Asynchronous (Messaging, Kafka)
• Implementing REST clients with Spring Cloud OpenFeign
• Message-driven communication overview

Session 2: Service Discovery and Load Balancing

• Introduction to Netflix Eureka for service registry
• Configuring Eureka Server and Eureka Client
• Client-side load balancing with Ribbon or Spring Cloud LoadBalancer

Session 3: Distributed Configuration Management

• Centralized config with Spring Cloud Config Server
• Externalized configurations and environment profiles
• Refreshing configurations at runtime

Lab Activities:

• Set up Eureka Server and register multiple microservices
• Use OpenFeign for service-to-service calls
• Configure a Spring Cloud Config Server and link clients

🔹 Day 3: Resilience, Security, and Deployment

Session 1: Building Resilient Microservices

• Fault tolerance patterns: Circuit Breaker, Retry, Timeout
• Implementing Resilience4j with Spring Boot
• Bulkheads and fallback mechanisms

Session 2: Security in Microservices

• Securing APIs with Spring Security and OAuth2 / JWT
• API gateway concepts with Spring Cloud Gateway
• Role-based access control and token validation

Session 3: Containerization and Deployment

• Dockerizing Spring Boot microservices
• Deploying to Kubernetes or cloud platforms (AWS, Azure, GCP)
• Monitoring and logging best practices (Prometheus, Grafana, ELK stack)

Lab Activities:

• Add resilience to microservices using Resilience4j
• Secure microservices with JWT authentication
• Containerize services and deploy a simple microservice app with Docker Compose or Kubernetes