The article discusses the benefits of using virtual clusters in Kubernetes for managing pull request testing more efficiently. It highlights the challenges of creating dedicated clusters for each workflow due to high time-to-spin and costs on Google Kubernetes Engine (GKE). The author suggests that while dedicated clusters improve isolation, they complicate delivery speed and increase costs. Virtual clusters provide a solution by allowing multiple teams to operate independently within one physical cluster, thus reducing conflicts, enhancing autonomy, and cutting down costs without sacrificing the benefits of isolation.
Virtual clusters allow multiple teams to run tests in isolation while sharing a single physical Kubernetes cluster, thus optimizing costs and reducing conflicts.
By employing virtual clusters, challenges related to dedicated clusters for each PR are mitigated, balancing testing efficiency with cost-effectiveness.
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