book

Building Serverless Applications on Knative

by Evan Anderson

November 2023

Intermediate to advanced

252 pages

7h 34m

English

O'Reilly Media, Inc.

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Who Is This Book For?BackgroundContainersCloud ProvidersKubernetes and Cloud NativeCloud-Hosted ServerlessHow This Book Is OrganizedConventions Used in This BookUsing Code ExamplesO’Reilly Online LearningHow to Contact UsAcknowledgments
Why Is It Called Serverless?A Bit of TerminologyWhat’s a “Unit of Work”?ConnectionsRequestsEventsIt’s Not (Just) About the ScaleBlue and Green: Rollout, Rollback, and Day-to-DayCreature Comforts: Undifferentiated Heavy LiftingCreature Comforts: Managing InputsCreature Comforts: Managing Process LifecycleSummary
Setup for This ChapterA Single-Page AppBootstrapping a React AppA Basic Web UIPackaging Our AppInto the Cloud on Your Laptop!Under the Covers: How Requests Are HandledContinuing to BuildAdding an APIAPI Gateways and Composing an AppSplitting an API into ComponentsAugmenting a ProxyComplementary ServicesKey-Value StorageObject StorageTimers (Cron)Task QueuesWorkflowsSummary
Infrastructure AssumptionsHardware and Operating System ManagementScheduling and the Datacenter as a ComputerServingControl-Plane ConceptsLife of a RequestAutoscaling Control LoopComparison with AWS LambdaEventingControl-Plane ConceptsDelivery GuaranteesLife of an EventEcosystemComparison with Amazon SNS and Other Cloud ProvidersComparison with RabbitMQComparison with Apache KafkaEventing SummaryFunctionsSummary
Top Speed: Reducing DragContinuously Delivering ValueWinning the (Business) RaceMicrobillingA Deal with the CloudClouding on Your OwnWhat Happens When You’re Not RunningThe Gravitational Force of ServerlessImplications for LanguagesImplications for SandboxingImplications for ToolingImplications for SecurityImplications for InfrastructureSummary
The Monolith Next DoorMicroservice Extension PointsAsynchronous Cleanup and ExtensionExtract, Transform, LoadThe Strangler Fig PatternExperimentsDark Launch and Throwaway WorkA Serverless Monolith?Summary
Events and MessagesWhy CloudEventsEvents as an APIWhat Does Event-Driven Mean?Event DistributionContent-Based Routing Versus ChannelsInternal and External EventsBuilding for Extension with “Inner Monologue”Workflow OrchestrationLong-Lived Workflows, Short-Lived ComputeWorkflow as Declarative ManifestsEvent BroadcastWhat’s So Tricky About Broadcast?Broadcast in Fast-Moving SystemsTask QueuesTask Queue FeaturesScaling in Time Instead of InstancesSummary
Ambient Event PublishingThe Active Storage PatternIs Your Database Your Monologue?Scenarios for Inner MonologuesKey EventsWorkflowsInner Monologues Versus RPCsSensitive Data and Claim ChecksHow to Use an Inner MonologueExtending the Monolith: Workflow DecorationScatter-Gather AdviceAccount Hijacking DetectionVersioned Events, Unversioned CodeClouds Have Monologues TooKubernetes: Only a MonologueAudit Log or Mono-Log?Summary

Different Types of Work in the Same InstanceWork Units That Don’t Signal TerminationProtocol MismatchInelastic ScalingInstance Addressability and ShardingSummary
MeltdownNarrowest BottleneckFeedback LoopCold Start, Extra SlowThe Race to ReadyAvoiding Cold StartsForecasting Is HardLoopbackHotspots Don’t ScaleGraphs and Focal PointsData SizeLockingExactly Once Is HardSummary
Log AggregationTracingMetricsLive Tracing and ProfilingAPM AgentsSummary
35 Years of ServerlessinetdCGIStored ProceduresHerokuGoogle App EngineCloud FoundryAWS LambdaAzure and Durable FunctionsKnative and Cloud RunCloudflare Workers and Netlify Edge FunctionsWhere to Next?AIDistributed and the EdgeBeyond StatelessSummary

Content preview from Building Serverless Applications on Knative

Part I. The Theory of Serverless

Welcome! The goal of the first part of this book is to give you a solid grounding in serverless computing, from both a theory (Chapters 1 and 4) and a practical point of view (Chapters 2 and 3). By the end of this part, you should be able to explain to an interested colleague why they should consider serverless for their next project, and show them some concrete examples of applications you can build with serverless.

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Publisher Resources

ISBN: 9781098142063Errata Page Supplemental Content