Three-tier microservices architecture on Kubernetes with shared Redis cache and PostgreSQL database demonstrates production-grade service mesh patterns. External traffic flows through an Ingress Controller to three independent microservices (MS1, MS2, MS3), each deployed as separate Deployments with dedicated Pods and Services within a single App namespace. All microservices connect to a centralized Redis Service for caching and a PostgreSQL StatefulSet with persistent volume claims for durable data storage. This architecture enables independent scaling, rolling updates, and fault isolation while maintaining shared state through Redis and PostgreSQL. Fork this diagram on Diagrams.so to customize service counts, add ConfigMaps, or integrate monitoring sidecars for your Kubernetes deployment.