Patients see their visit time to a five-minute window. Doctors stay continuously utilized. Administrators spot bottlenecks in real time.

MedFlow runs an intelligent queue for multi-specialty hospitals: online booking, check-in by ticket number, real-time position updates over WebSocket, and ETA prediction from each doctor's consultation history.

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Live demo · backed by Go + Postgres + WebSocket on AWS

Technical highlights

Real-time queue

WebSocket pushes position updates in under 500ms every time a doctor calls the next patient.

Accurate ETA

Moving average over each doctor's last 30 consultations — no guesswork.

Concurrent-safe

100 patients booking one slot at the same time → database-level unique constraint blocks duplicates (0 conflicts).

State machine

BOOKED → CHECKED_IN → CALLED → IN_CONSULT → COMPLETED. Atomic transitions, no races.

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