What is the key difference between horizontal scaling and vertical scaling in scalability testing?
- Horizontal scaling adds more nodes, while vertical scaling enhances individual nodes
- Horizontal scaling focuses on single-node optimization, while vertical scaling improves cluster coordination
- Vertical scaling distributes workload, while horizontal scaling optimizes network communication
- Vertical scaling increases network bandwidth, while horizontal scaling increases CPU utilization
The key difference between horizontal scaling and vertical scaling lies in their approach to enhancing system capacity. Horizontal scaling involves adding more nodes to a system, thereby distributing the workload across multiple machines. On the other hand, vertical scaling focuses on enhancing the capabilities of individual nodes by adding more resources like CPU, memory, or storage to a single machine.
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