Developing Microservices with Quarkus

Module 1: Introduction to Quarkus & Project Setup

⏳ 30 minutes

• Topics: Quarkus philosophy (container-first, native images), tooling (CLI, Maven plugin)

• Hands-on: Bootstrap a “Hello, Quarkus” project and explore live-coding hot-reload

Module 2: Building RESTful Services

⏳ 1 hour

• Topics: JAX-RS resources, dependency injection with CDI, JSON serialization

• Hands-on: Create CRUD endpoints and document them with OpenAPI annotations

Module 3: REST Client & API Documentation

⏳ 1 hour

• Topics: RestClient interfaces, registering and consuming external APIs, generating Swagger UI

• Hands-on: Integrate a third-party HTTP service and verify interactive API docs

Module 4: WebSockets in Quarkus

⏳ 45 minutes

• Topics: Annotated endpoints (@ServerEndpoint), session management, broadcasting messages

• Hands-on: Build a chat microservice that pushes real-time updates to connected clients

Module 5: GraphQL Endpoints

⏳ 45 minutes

• Topics: Defining GraphQL schema with SmallRye, queries vs. mutations, payload mappings

• Hands-on: Expose a GraphQL API for querying and modifying domain objects

Module 6: Fault Tolerance & Health Checks

⏳ 45 minutes

• Topics: MicroProfile Fault Tolerance (@Retry, @CircuitBreaker), liveness/readiness probes

• Hands-on: Secure endpoints with retry logic and implement custom health-check procedures

Module 7: Persistence & Database Integration

⏳ 1 hour

• Topics: Panache ORM vs. plain JDBC, transaction management, reactive clients

• Hands-on: Connect to PostgreSQL, define entities, and perform CRUD operations with Panache

Module 8: Capstone Project – Microservice Application

⏳ 1 hour

• Topics: Bringing it all together—REST, WebSockets, GraphQL, fault tolerance, and persistence

• Hands-on: Develop a small microservice suite that demonstrates all learned features

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