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Use uncached client and partial metadata for secret and configmaps
These changes allow the current stable Cluster API release to reduce its memory footprint by a large margin. Currently, we have multiple controllers that are either watching (like ClusterResourceSet) or querying (get/list) corev1.Secret and corev1.ConfigMap resources. When these kinds go through the case, all of the objects in the cluster end up being cached, not just the ones we're interested in. In production environments, there might be a large number of ConfigMap or Secret resources that we end up caching and watching for little gain. Signed-off-by: Vince Prignano <vincepri@vmware.com>
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