How do I monitor the performance of Cloudflared's DNS proxy?

You can monitor Cloudflared's DNS proxy performance using its built-in logging and metrics. Cloudflared logs DNS queries, responses, and errors to standard output and can be configured to write to log files. You can also use metrics exposed by Cloudflared to monitor query rates, latency, and error rates. These metrics can be visualized using monitoring tools like Prometheus or Grafana to track performance and identify potential issues.