What metrics did you use to evaluate system performance during load testing?

The following key metrics are usually used to assess system performance during load testing:

• Response Time — how long the system takes to respond to requests.
• Throughput — the number of requests processed by the system per unit of time.
• Resource Utilization (CPU, memory, disk, network) — how efficiently system resources are used.
• Error Rate — the percentage of failed or erroneous requests.
• Time to First Byte (TTFB) — the time elapsed before receiving the first byte of response.

These metrics help understand how well the system handles load and where bottlenecks may occur.