Kitchen
What do baristas make next?
processed 0 outstanding 0
Tickets slide in as orders are consumed.
01 · Order station producer
What can we get you?
1
Producer receipts K2 confirmed
- Orders appear here once K2 confirms the write.
produce
02 · K2 stream append-only
The order stream
0 events
retained
retained
Retained history · consuming never removes an event
The stream is empty.
Place an order → it lands here as a retained K2 record.
Subscriptions · read position same events, independent progress
kitchen not subscribed yet —
analytics not subscribed yet —
loyalty not subscribed yet —
inventory not subscribed yet —
Positions are app-derived from confirmed produces and processed events, not a native K2 lag metric.
subscribe
Not running
D1 · current state
Sales analytics
How is lunch going?
processed 0 outstanding 0
$0.00
0 orders · 0 cups · avg $0.00
Loyalty
Points, once per order. Exactly.
processed 0 outstanding 0
0pts
0 members · 10 pts per drink
04 · A service that starts late
“How much oat milk have we used since opening?”
New subscription · start_at: earliest · no producer changes