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What is the difference between a Deployment and a StatefulSet?

Entry Kubernetes
Quick Answer Deployments are for stateless apps รขโ‚ฌโ€ Pods are interchangeable, created in any order, and can be killed and replaced without consequences. StatefulSets are for stateful apps (databases, message queues) รขโ‚ฌโ€ each Pod gets a stable hostname, stable storage, and is created/deleted in strict order. Identity matters for StatefulSets; it doesn't for Deployments.

Answer

Deployment is for stateless Pods. StatefulSet provides stable identity and persistent storage.
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This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.

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Source: SugharaIQ

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