What metrics did you analyze to assess system performance or status?

To assess the performance and state of a system in Go, the following metrics are usually analyzed:

• CPU Usage — processor load to understand if the system is overloaded.
• Memory Usage — amount of used RAM, including heap and stack.
• Goroutines Count — number of active goroutines to detect leaks or excessive creation.
• Garbage Collection Metrics — frequency and duration of garbage collection, which affects delays.
• Latency — response time of the system or individual operations.
• Throughput — number of requests or operations processed per unit of time.
• Error Rates — frequency of errors or exceptions.

In Go, such metrics are often collected using the runtime package (e.g., runtime.NumGoroutine(), runtime.ReadMemStats()), as well as external monitoring tools (Prometheus, Grafana).