Monolith to
Microservices.
One Command.

// One annotation per module. That is it.
@DecomposableModule(
  serviceName = "order-service",
  port = 8081,
  ownedSchemas = {"orders"}
)
public class OrderModule {
  private PaymentService paymentService;
}

// Saga orchestration from one annotation
@DistributedSaga(
  sagaId = "checkout",
  compensation = "cancelCheckout"
)
public void processCheckout(Long orderId) {
  paymentService.charge(orderId);
  inventoryService.reserve(orderId);
}

// Mark methods explicitly if needed
@ServiceBoundary
public boolean isConfirmed(Long id) {
  return repo.existsById(id);
}

// order-service/PaymentServiceClient.java
@NetScopeClient(
  server = "payment-service",
  beanName = "paymentService"
)
public interface PaymentServiceClient {
  boolean charge(Long orderId);
}

// order-service/OtelConfig.java
public class OtelConfig {
  // OTLP/gRPC -> Jaeger, W3C traceparent
  // BatchSpanProcessor, auto service.name
}

// fractalx-saga-orchestrator/
// CheckoutSagaService.java
// SagaInstance.java (JPA entity)
// POST /saga/checkout/start
// GET  /saga/status/{correlationId}

// payment-service/OrderService.java
@NetworkPublic // added automatically
public boolean isConfirmed(Long id) {
  return repo.existsById(id);
}