How do Kubernetes Operators Handle Concurrency?

1. controller-runtime

   1 59 2,784 9.2 Go

   Repo for the controller-runtime subproject of kubebuilder (sig-apimachinery)

   

   By default, operators built using Kubebuilder and controller-runtime process a single reconcile request at a time. This is a sensible setting, since it's easier for operator developers to reason about and debug the logic in their applications. It also constrains throughput from the controller to core Kubernetes resources like ectd and the API server.

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3. kubebuilder

   2 52 8,668 9.7 Go

   Kubebuilder - SDK for building Kubernetes APIs using CRDs

   

   By default, operators built using Kubebuilder and controller-runtime process a single reconcile request at a time. This is a sensible setting, since it's easier for operator developers to reason about and debug the logic in their applications. It also constrains throughput from the controller to core Kubernetes resources like ectd and the API server.

4. client-go

   3 41 9,579 9.5 Go

   Go client for Kubernetes.

   

   Controller-runtime uses the client-go/util/workqueue library to implement its underlying reconciliation queue. In the package's doc.go file, a comment states that the workqueue supports these properties:

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