Services Decouple Identity From Pods
Explain how Services, labels, and selectors keep traffic stable while Pods change.
If a client depends on a Pod address, it is depending on something Kubernetes is free to replace. The stable contract A Service provides a stable network abstraction for a changing set of Pods. The Pods are selected through labels. The caller uses the Service endpoint, and Kubernetes updates the backing endpoint list as Pods come and go. Why labels are the hinge Labels are not decoration. They are how Services, Deployments, NetworkPolicies, and operators find the objects they should act on. A sloppy selector is a routing bug waiting to happen. A narrow, consistent selector gives the platform room…
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