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Difference BetweenStatefulSet and Deploymentin Kubernetes A Comparative Overview +91-7032290546 www.visualpath.in
Introduction to Kubernetes Workloads • Kubernetes provides multiple ways to manage application workloads. • Two major controllers: Deployment and StatefulSet • Choosing the right one depends on the app’s needs (e.g., stateless vs. stateful). +91-7032290546 www.visualpath.in
What is a Deployment? • Designed for stateless applications • Manages ReplicaSets and ensures the desired number of pods are running. • Supports rolling updates, rollback, scaling • Pods are interchangeable – no identity retained. +91-7032290546 www.visualpath.in
What is a StatefulSet? • Designed for stateful applicationslike databases. • Each pod has a unique identity (name + persistent volume). • Pods are created, scaled, and deleted in order. • Used when persistent storage and identity are required. +91-7032290546 www.visualpath.in
Key Differences (Tabular Format) +91-7032290546 www.visualpath.in
Use Cases for Deployment • Web frontends (NGINX, React, etc.) • REST APIs • Microservices without local state • Background jobs +91-7032290546 www.visualpath.in
Use Cases for StatefulSet • Databases (MySQL, PostgreSQL) • Queues (Kafka, RabbitMQ) • Clusters with leader election (ZooKeeper, etcd) • Applications that need sticky identity. +91-7032290546 www.visualpath.in
Visual Comparison Diagram Side-by-side illustration: • Deployment: Pod replicas all equal, ephemeral • StatefulSet: Pod replicas with identity & volume(Use visuals to enhance understanding — Kubernetespod icons, etc.) +91-7032290546 www.visualpath.in
Summary and Takeaway • Deployment = stateless, interchangeable pods • StatefulSet = stateful, stable pods with identity • Choose based on whether your app needs storage and identity • Understanding this helps in designing scalable and reliable apps in Kubernetes. +91-7032290546 www.visualpath.in
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