What methods of monitoring and diagnosing server health do you know?

Methods commonly used for monitoring and diagnosing the state of a server in Go include:

• Profiling with pprof — a built-in package for collecting CPU, memory, lock, and goroutine profiles. It helps identify bottlenecks and leaks.

• Logging — collecting and analyzing server logs to detect errors and anomalies.

• Metrics with Prometheus — exporting metrics (such as request count, response time, memory usage) and visualizing them through Grafana.

• Health checks — special HTTP endpoints that return the server status.

• Request tracing — using OpenTelemetry or Jaeger to track call chains.

Example of using pprof:

import (
    "net/http"
    _ "net/http/pprof"
)

func main() {
    go func() {
        log.Println(http.ListenAndServe("localhost:6060", nil))
    }()
    // main server code
}

After starting, you can open http://localhost:6060/debug/pprof/ for analysis.