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Pro Microservices in .NET 10: A Holistic Approach to Building Microservices in C#

Name: Pro Microservices in .NET 10: A Holistic Approach to Building Microservices in C#
ISBN: 9798868820496

by Sean Whitesell, Rob Richardson

November 2025

Beginner to intermediate

261 pages

5h 57m

English

Apress

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Pro Microservices in.NET 10
Foreword
Introduction
Who Should Read This BookBook Organization
Acknowledgments
Table of Contents
About the Authors
About the Technical Reviewer
1. Introducing Microservices
BenefitsTeam AutonomyService AutonomyScalabilityFault IsolationData AutonomyChallenges to ConsiderMicroservice BeginningArchitecture ComparisonMicroservice PatternsAPI Gateway/BFFExternal Configuration StoreMessagingBusiness Process CommunicationRPCFire-and-ForgetCallbackPub/SubMessage FormatTransportTestingTest PyramidE to EServiceUnit TestsAutomationDeploying MicroservicesVersioningContainersPipelinesCross-Cutting ConcernsMonitoringLoggingAlertingTesting the ArchitectureSummary
2. Other Software Patterns
MonolithWhat Is ItPros and ConsBest Use-CaseModular MonolithWhat Is ItPros and ConsBest Use-CaseLayered ArchitectureWhat Is ItPros and ConsBest Use-CaseEvent-Driven ArchitectureWhat Is ItPros and ConsBest Use-CasePipeline ArchitectureWhat Is ItPros and ConsBest Use-CaseMicro-KernelWhat Is ItPros and ConsBest Use-CaseService-Oriented ArchitectureWhat Is ItPros and ConsBest Use-CaseMicroservicesWhat Is ItPros and ConsBest Use-CaseSummaryChoose the Right Tool for the Job
3. Searching for Microservices
The BusinessDomain-Driven DesignDomainSubdomainsUbiquitous LanguageBounded ContextsAggregates and Aggregate RootsEvent StormingSetupColor CodingThe MeetingSeeing the DomainsDomain ModelsFocus on BehaviorDomain ModellingDecompositionBecoming a MicroserviceSummary

4. ASP.NET Is a Great Place for Microservices
A Brief History of.NET.NET Framework.NET CoreModern.NETWays to Build Microservices in ASP.NETASP.NET MVCASP.NET Razor PagesASP.NET Web APIASP.NET Minimal APIsAzure FunctionsKEDA FunctionsAspireSummary
5. First Microservice
Interprocess CommunicationAPI First DesignTransport MechanismsRESTgRPCFile ➤ New ➤ ProjectContacting Google’s Routes APIApp SettingsTesting What We HaveSwaggerLeveraging gRPCIncorporating gRPCNuGet PackagesProject FileTesting gRPC EndpointModify the MonolithService DiscoverySummary
6. Microservice Messaging
Issues with Synchronous CommunicationLimits of RPCMessagingArchitectureReasons to Use MessagingLoosely CoupledBufferingScalingIndependent ProcessingMessage TypesQueryCommandEventMessage RoutingBroker-lessBrokeredConsumption ModelsCompeting ConsumersIndependent ConsumersDelivery GuaranteesAt Most OnceAt Least OnceOnce and Only OnceMessage OrderingBuilding the ExamplesBuilding the Messaging MicroservicesRunning RabbitMQFirst ProjectBuilding the Invoice MicroserviceBuilding the Payment MicroserviceTesting the Competing ConsumersBuilding a PubSub DemoDrawbacks of MessagingSummary
7. Decentralizing Data
Current StateThe RuleDatabase ChoicesAvailabilitySharing DataDuplicate DataTransactional ConsistencyCAP TheoremTransactions Across MicroservicesSagasRouting SlipChoreographyOrchestrationCQRSEvent SourcingScenariosScenario 1Scenario 2Eventual ConsistencyData WarehouseMaterialized ViewSplitting the MonolithMoving CodeStrangler PatternFeature FlagsSplitting the DatabaseSummary
8. Testing Microservices
Cost of ErrorsWhat Not to TestWhat to TestCodePerformanceSystem Failure HandlingSecurityTesting LevelsUnit TestingIntegration TestingComponent TestingMockingStubContract TestingConsumer-Driven Contract TestingService TestingEnd-to-End TestingEnd-to-End Testing MicroservicesConsumer-Driven Contract Testing Deep DiveConsumer ProjectConsumer Test ProjectProvider Test ProjectSummary
9. Deploying Microservices
Containerize a.NET MicroserviceContainerize.NET with a DockerfileContainerize.NET with the.NET SDKDeploy a Containerized.NET MicroserviceDeploy to Azure Kubernetes Service (AKS)Deploy to Azure Container AppsDeploy to Azure App ServiceOther Deployment OptionsReverse ProxyKubernetes IngressApplication GatewayAPI ManagementYARPReverse Proxy RoundupSummary
10. Healthy Microservices
Is It Healthy?Where Do We Look?OpenTelemetryAspireAdding more Instrumenters to.NET AspireCustom Logs, Traces, and MetricsAzure Application InsightsEffective MonitoringDebugging with LogsSummary
Index

Content preview from Pro Microservices in .NET 10: A Holistic Approach to Building Microservices in C#

S. Whitesell, R. RichardsonPro Microservices in.NET 10https://doi.org/10.1007/979-8-8688-2049-6_8

8. Testing Microservices

Sean Whitesell¹ and Rob Richardson²

Kathy, the developer at Code Whiz, has made a few microservices and is concerned with proving they work as expected. She knows that the microservices are crucial for their client Hyp-Log, our hypothetical company in this book. Kathy looks at the various ways of testing microservices.

This chapter will go over why testing is important, what to test and what not to test, and various approaches to testing. We will also build an example of contract testing for REST-based ...

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Pro Microservices in .NET 10: A Holistic Approach to Building Microservices in C#

by Sean Whitesell, Rob Richardson

8. Testing Microservices

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.