Description: Node scaling is the process of adding or removing nodes in a distributed system to meet resource demand and improve performance. This concept is fundamental in microservices architectures and cloud computing environments, where workload can vary significantly. By scaling nodes, the goal is to optimize resource utilization, ensure service availability, and enhance user experience. There are two main types of scaling: vertical scaling, which involves increasing the capacity of an existing node, and horizontal scaling, which consists of adding more nodes to the system. Horizontal scaling is particularly popular in distributed environments, where multiple instances of a service can be deployed to handle traffic spikes. Additionally, auto-scaling allows systems to dynamically adjust the number of nodes based on performance metrics, resulting in more efficient resource management. In summary, node scaling is a key strategy for maintaining efficiency and resilience in distributed systems, effectively adapting to fluctuations in demand.