Effective state management is crucial for achieving scalability in any application, dictating how well a system can handle increased load and users. Poor state management, especially with shared mutable state, often leads to bottlenecks, concurrency issues like race conditions, and inconsistencies that impede performance under stress. In distributed systems, managing state across multiple instances becomes complex, demanding careful strategies to ensure consistency and availability across all nodes. Externalizing state to dedicated, scalable services like databases, caches, or message queues allows application instances to remain largely stateless and enables horizontal scaling by simply adding more instances. This strategy minimizes the need for inter-instance communication about state, significantly improving overall system throughput and responsiveness under heavy load. More details: https://www.google.si/url?q=https://epi-us.com/