Live Dashboard

Overview

A stdlib-only HTTP server with a Server-Sent Events stream that pushes running stats from test_record_instance to any browser. Use it for demos, war rooms, and on-call.

Endpoints

Endpoint	Returns
`GET /`	Single-page HTML with live tiles + per-name table.
`GET /events`	`text/event-stream`: one JSON snapshot per refresh interval.
`GET /snapshot`	One-shot JSON, suitable for polling clients.

Start / stop

from je_load_density import start_dashboard, stop_dashboard

start_dashboard(
    host="127.0.0.1",
    port=8765,
    refresh_seconds=1.0,
    window_seconds=10.0,
)
# … run actions …
stop_dashboard()

The snapshot payload looks like:

{
  "totals": {"requests": 1234, "failures": 7, "failure_rate": 0.0057, ...},
  "latency_overall": {"p50_ms": 42, "p95_ms": 180, ...},
  "per_name": {"/checkout": {"count": 200, "p95_ms": 220, ...}},
  "rps": 41.3,
  "avg_ms": 51.2,
  "ts": 1748256000.0
}

Action JSON

[["LD_start_dashboard", {"host": "127.0.0.1", "port": 8765}],
 ["LD_start_test", {...}],
 ["LD_stop_dashboard"]]