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Practical Serverless and Microservices with C#

by Gabriel Baptista, Francesco Abbruzzese

July 2025

Intermediate to advanced

474 pages

10h 17m

English

Packt Publishing

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Who this book is forWhat this book coversTo get the most out of this bookDownload the color images Get in touchFree Benefits with Your BookHow to Unlock
Technical requirementsFree Benefits with Your BookWhat is serverless?Is serverless a way to deliver microservices?How does Microsoft Azure present serverless?Creating your first serverless app in AzureUnderstanding the triggers available in Azure FunctionsCoding with Azure FunctionsCoding Azure functions using VS CodeCoding Azure functions using Visual StudioSummaryQuestionsFurther reading
The rise of Service-Oriented Architectures (SOAs) and microservicesThe rise of SOAToward microservices architecturesThe definition and organization of microservices architecturesA definition of microservices architecturesDomain of expertise and microservicesReplicable microservicesSplitting microservices development among different teamsMicroservices, interfaces, and communication protocolsJust the interfaces of the logical microservices are publicMicroservices organizationCar-sharing exampleWhen is it worth adopting microservices architectures?Microservices common patternsResilient task executionEfficacious handling of asynchronous communicationEvent-based communicationsInterfacing the external worldSummaryQuestionsFurther readingGet This Book’s PDF Version and Exclusive Extras
Technical requirementsThe Onion ArchitectureThe Domain layerApplication servicesQueriesCommandsDomain eventsA solution template based on the Onion ArchitectureMatching aggregates and ORM entitiesA complete solution based on the Onion ArchitectureContainers and DockerDocker Desktop: a simple exampleA few more Docker commands and optionsVisual Studio support for DockerSummaryQuestionsFurther reading
Technical requirementsHTTP triggerAdvantages, disadvantages, and when to use the HTTP triggerCar-sharing HTTP trigger exampleAdvantages, disadvantages, and when to use the Azure SQL triggerCar-sharing SQL trigger exampleAdvantages, disadvantages, and when to use the Cosmos DB triggerCar-sharing Cosmos DB trigger exampleAzure Service Bus triggerComparison with the Kafka trigger and the RabbitMQ triggerCar-sharing example with the Azure Service Bus triggerSummaryQuestionsFurther readingGet This Book’s PDF Version and Exclusive Extras
Technical requirementsTimer triggerPublishing your functionsMonitoring your functionsAdvantages, disadvantages, and when to use Azure timer triggersCar-sharing timer trigger exampleBlob triggerAdvantages, disadvantages, and when to use Blob storage triggersBlob trigger implementation using Event GridCar-sharing Blob storage trigger exampleQueue storage triggerAdvantages, disadvantages, and when to use queue storage triggersCar-sharing queue storage trigger exampleSummaryQuestionsFurther reading
Technical requirementsEnabling IoT in AzureConnecting IoT Hub with Azure FunctionsCar-sharing IoT exampleSummaryQuestionsFurther readingGet This Book’s PDF Version and Exclusive Extras
Technical requirementsThe route-planning microservice of the car-sharing application Microservice specificationsHandling security and authorization Creating the Visual Studio solution Microservice basic design The message broker: RabbitMQInput communicationOutput communicationEnsuring that messages are processed in the proper orderDesigning Docker image environment parametersThe microservice main serviceEasyNetQ’s RPC facilitiesOther required hosted servicesEnsuring resilient task execution with Polly The Polly libraryAdding Polly to our projectFrom abstraction to implementation details The domain layerThe route request aggregateThe route offer aggregateThe output queue item aggregateThe database driverThe IOutputQueueRepository implementationThe IRouteRequestRepositoryimplementationThe IRouteOfferRepository implementationCreating migrations and databasesThe application services: Defining all command and event handlersCoding all event handlersSummaryQuestionsFurther reading
Technical requirementsIntroduction to orchestrators and their configuration.yaml filesKubernetes basicsInteracting with Kubernetes: Kubectl, Minikube, and AKSCreating an Azure Kubernetes clusterConfiguring your application in KubernetesDynamic provisioning of permanent disk spaceReplicaSets, Deployments, and their servicesStatefulSets and Headless ServicesScaling and autoscalingResource metricsPod metricsObject metricsRunning your microservices on KubernetesOrganizing all deployment environmentsDatabase engine and database installationContainer registriesMessage broker installationDebugging techniquesTesting the route-matching worker microserviceAdvanced Kubernetes configurationSecretsReadiness, liveness, and startup probesIngressesTesting Ingresses with MinikubeUsing an NGNIX-based Ingress in AKSSummaryQuestions Further readingGet This Book’s PDF Version and Exclusive Extras
Technical requirementsTools for simplifying Kubernetes clusters usage and administrationHelm and Helm chartsKubernetes graphic UIsKubernetes administrative toolsDevelopment environments based on KubernetesAzure Container Apps basics and plansConsumption-only and workload profilesApplication versioningInteracting with Azure Container AppsDeploying your microservice application with Azure Container AppsBasic commands and operativityApplication configuration options and the .yaml formatContainer configurationThe ingress configurationVolume definition and allocationAssociating an Azure identity to your applicationSummaryQuestionsFurther reading

Application Security Best PracticesNetwork SecurityData SecurityAuthentication and AuthorizationJSON Web TokensOAuth 2.0 and OpenID Connect (OIDC)Securing DependenciesKubernetes and Azure Container Apps SecurityKubernetes network securityAzure Container Apps Network SecurityKubernetes User Security Azure Container Apps User SecurityThreat Detection and MitigationThreatsEvent InjectionPrivilege EscalationDenial of Service (DoS) AttacksMan-in-the-Middle (MitM) AttacksCode InjectionDetection and Mitigation with Web Application FirewallsObservability for Serverless and MicroservicesLoggingMetricsTracingCentralized Observability with Azure MonitorSummary QuestionsFurther readingGet This Book’s PDF Version and Exclusive Extras
General architecture descriptionMicroservices involvedAuthorization microserviceCarSharer microserviceCarRequests microserviceRoutesPlanning microserviceEmail microserviceThe demonstration codeSummaryFurther reading
Technical requirements.NET Aspire features and servicesService discovery and its role in .NET Aspire.Resource integration and automatic resource configurationApplication telemetryConfiguring microservices and resourcesAzure Functions integrationUsing .NET Aspire in practiceRabbitMQ integrationDeploying a .NET Aspire projectSummaryQuestionsFurther readingGet This Book’s PDF Version and Exclusive Extras
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Content preview from Practical Serverless and Microservices with C#

12 Simplifying Microservices with .NET Aspire

.NET Aspire was conceived to simplify the testing of interacting microservices on development machines. In the Running your microservices on Kubernetes section of Chapter 8, Practical Microservices Organization with Kubernetes, we listed two testing techniques we can adopt on our development machines:

Testing the interacting microservices with minikube while debugging each single microservice with the bridge technique
Exploiting Visual Studio native support for Docker to debug and test our microservices while they interact through a Docker virtual network

While the minikube technique is complete and more realistic, it is time-consuming, so most of the testing/debugging is performed with Docker ...

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ISBN: 9781836642015Supplemental Content

12

Simplifying Microservices with .NET Aspire