How deeply does Quarkus in Action cover Knative?

Explains application creation, configuration, deployment, scale-to-zero, cold starts, and concurrent scaling without detailing Knative internals.

Knative

As explained in Quarkus in Action

Knative is a Kubernetes-based platform that provides components for serving and running serverless workloads.

Knative provides a Kubernetes-based way to run serverless workloads on demand. It suits services that do not need to remain running continuously: inactive applications can scale to zero, then start a pod when a request arrives. section 11.5.3 section 11.5.4

A Quarkus application can target Knative through the Kubernetes deployment extension. The generated resources reference a container image, configure runtime environment variables, and limit concurrent requests per pod. section 11.5.3

A practical Knative deployment follows these steps:

Create a Quarkus application with Funqy HTTP, a SmallRye GraphQL client, and OpenShift integration. section 11.5.3
Deploy with ./mvnw clean package -Dquarkus.knative.deploy=true. section 11.5.4

Car-statistics service

A Funqy function calls an Inventory service through GraphQL and returns the current number of available cars. After deployment, requesting /getCarStatistics starts the application when necessary and returns the statistics.

How Quarkus in Action covers it

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Also explained in

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Platform Engineering on KubernetesKnative Serving is the Knative component that provides deployment, revision, networking, and traffic-management capabilities for serverless workloads on Kubernetes.
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Google Anthos in ActionKnative is an open-source platform that extends Kubernetes for deploying and running cloud-native workloads, including serverless applications.

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Related concepts

Kubernetesuses · Kubernetes is an open-source platform for orchestrating and automating the deployment, scaling, and management of containerized workloads across computing clusters.
scalabilityuses · Scalability is the ability of a system, process, or method to accommodate increasing workload, size, or demand while maintaining acceptable operation.
Kubernetes extensionkind of · A Kubernetes extension is an organization-specific addition that expands Kubernetes to address challenges beyond its built-in capabilities.
serverless computingkind of · Serverless computing is a cloud execution model in which a provider manages the underlying infrastructure and allocates or scales resources for application workloads.
Knative Servinghas part · Knative Serving is a Kubernetes-based platform component for deploying, serving, routing, and autoscaling containerized serverless workloads.
KServeused by · KServe is an open-source Kubernetes-native platform for deploying and serving machine-learning models through standardized resources and interfaces.

This explainer was generated by Manning's knowledge graph from the text of Quarkus in Action. The section links point to the parts of the book it draws on.