Inappropriate Log Level (ARCH5161)

Key go.logging.inappropriate-log-level · Severity info · Category logging

Logging errors at Info/Debug and routine flow at Error breaks alerting and floods logs with noise. The level should reflect the true significance of the event.

Incorrect

func save(log *slog.Logger, err error) {
  if err != nil {
    log.Info("save failed", "err", err) // error at Info
  }
}

Correct

func save(log *slog.Logger, err error) {
  if err != nil {
    log.Error("save failed", "err", err)
  }
}

Fix

Log errors at Error, routine flow at Info, and verbose tracing at Debug.