Upstream
Named feed
Each host quotes one upstream. The card is how a client learns which one.
Quote desk
One card for the feed this host quotes.
The public page names the upstream, the revision, and whether the feed is live. Quote rows stay on the trading side.
Status
Live or paused
A paused feed stays on the card so a client can tell a quiet market from a stopped source.
Revision
Cache check
The revision moves when the upstream changes. Clients compare it with the copy they stored.