Rust WebSocket backend
An axum service holds a one-second tick, advances simulated metric series, and fans a JSON snapshot out to every client over a single broadcast channel.
Live over WebSocket
Metrics thatmove in real time
A single-page dashboard streaming live data from a Rust service over a WebSocket, rendered with hand-drawn SVG charts — never polling.
Scroll
Dashboard
Live, the moment it happens
Waiting for the first snapshot...
About
Streamed, not polled
A Rust service on Fly.io advances a set of simulated metric series once a second and broadcasts a single JSON snapshot to every connected client. The browser opens one WebSocket and simply reacts to what arrives.
There is no interval timer hammering an API. When the connection drops, the client reconnects with exponential backoff and the dashboard reports its status honestly rather than freezing.
1
Persistent WebSocket
4
Live metric series
1s
Server tick interval
0
Polling requests
Features
A full-stack pipeline, end to end
Streamed, never polled
The frontend opens one WebSocket and reacts to pushes, so the dashboard reflects new data the instant the server produces it.
Hand-drawn SVG charts
The area chart, sparklines, and category bars build their own SVG paths from the data. No charting dependency, full control over every animation.
Resilient by design
The client reconnects with capped exponential backoff and surfaces an honest status: connecting, live, reconnecting, or offline.
Animated in real time
Values count up smoothly and bars spring to new heights, calming to instant updates when reduced motion is requested.
Interactive filters
Choose which metric the large chart plots; the selection reshapes the view live without interrupting the stream.