A line that moves against you should not wait for a refresh.
Ingestion runs every minute and writes a snapshot with history. When a price changes, the new board is broadcast to every connected client immediately rather than sitting until someone reloads.
The board has been steady.
No price has changed since the last few snapshots. Quiet is a real state, and it is what this page shows when it is true.
Snapshots, not overwrites
Every ingest appends rather than replaces, so each price carries a trail. That trail is what draws the sparkline on the board and what the price-trend signal reads when the engine prices a market.
Broadcast, not polling
The ingest job publishes the refreshed board when it finishes. Clients hold a WebSocket and patch the prices they are showing, so an open tab stays current without asking repeatedly whether anything changed.
Degrades to server-rendered
If the realtime server is unreachable the board keeps the values it was rendered with rather than blanking or spinning. A stale price shown plainly is more useful than an empty cell.
Watch it live
The full feed, with every book and every move as it lands.