Quarkus Development Patterns

Quarkus 3.x architecture and API patterns for cloud-native, event-driven services with Apache Camel.

When to Activate

• Building REST APIs with JAX-RS or RESTEasy Reactive
• Structuring resource → service → repository layers
• Implementing event-driven patterns with Apache Camel and RabbitMQ
• Configuring Hibernate Panache, caching, or reactive streams
• Adding validation, exception mapping, or pagination
• Setting up profiles for dev/staging/production environments (YAML config)
• Custom logging with LogContext and Logback/Logstash encoder
• Working with CompletableFuture for async operations
• Implementing conditional flow processing
• Working with GraalVM native compilation

Service Layer with Multiple Dependencies

@Slf4j
@ApplicationScoped
@RequiredArgsConstructor
public class OrderProcessingService {

    private final OrderValidator orderValidator;
    private final EventService eventService;
    private final OrderRepository orderRepository;
    private final FulfillmentPublisher fulfillmentPublisher;
    private final AuditPublisher auditPublisher;

    @Transactional
    public OrderReceipt process(CreateOrderCommand command…