<aside> 📚 📁 Category: Kubernetes

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Overview

StatefulSets manage stateful applications requiring stable identities, persistent storage, and ordered deployment. Ideal for databases and distributed systems.

<aside> ℹ️ Why It Matters: Understanding StatefulSets is essential for building robust, scalable, and secure modern applications.

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Key Concepts

• [x] Stable Pod Identities - Predictable names
• [x] Ordered Deployment - Sequential startup
• [x] Persistent Volumes - Per-pod storage
• [x] Headless Service - Stable network IDs
• [x] Pod Management Policies - OrderedReady, Parallel
• [x] Rolling Updates - With partitions
• [x] Storage Classes - Dynamic provisioning
• [x] Init Containers - Setup tasks

Common Use Cases

<aside> 💡 Where to Apply StatefulSets

                        Database clusters
                        Message brokers
                        Distributed file systems
                        Caching clusters
                        ZooKeeper ensembles
                        Elasticsearch

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Best Practices

• [x] Use persistent volumes
• [x] Implement backups
• [x] Configure pod anti-affinity
• [x] Use init containers