How does the horizontal scalability work in Storm?

In Storm, horizontal scalability is achieved by dynamically adjusting the number of worker nodes. Storm allows users to increase or decrease the number of worker nodes based on changes in load in order to maintain system performance and reliability. Specifically, when the load increases, users can add more worker nodes to distribute the load and improve system processing capacity. Conversely, when the load decreases, users can reduce the number of worker nodes to save resources and reduce costs. Storm will automatically redistribute tasks and adjust the topology structure to accommodate changes in the number of worker nodes, ensuring smooth operation of the system.