Storage and Stateful Apps in Kubernetes: Volumes, PersistentVolumeClaims, StatefulSets and the Database Decision
If several replicas must write the same files, the answer is object storage, not a PVC; ReadWriteOnce means one node, not one pod. With real output we look at emptyDir sizeLimit eviction, StorageClasses and reclaim policy, PostgreSQL 18 on a StatefulSet (including the new PGDATA path), managed DB versus operator, and the ASP.NET Core Data Protection key ring breaking across replicas.
8 Nov 2026
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11 min
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5
