Keeps every server's traffic reports (last hour at one second, per-minute
rows to server_traffic once a minute, pruned after traffic_days) and shows
packets, bytes, HTTP requests and latency per second, per server, with the
busiest message types and HTTP routes. Live over the traffic WebSocket topic;
1 hour, 24 hours and 7 days ranges. The same counters are in /metrics.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
