shanigarapusheshanth2007-wq/hackathon

How shanigarapusheshanth2007-wq/hackathon works

MediGrid coordinates emergency bed reservations and inter-hospital transfers: ambulance requests enter the API, which finds and atomically holds a suitable bed, records patient state and an outbox event, then returns a result to clients. RabbitMQ distributes events to independent tracker, notifier, audit and transfer-saga workers; a sweeper releases expired holds. Redis arbitrates live availability, while Postgres keeps the durable ledger. The README documents the browser map, hospital console and operations dashboard; unsampled UI and worker details are represented at their documented paths, not treated as inspected source.

Main entry points: api.js REST and WS API · db.js Postgres ledger · events.js Outbox and relay · redis.js Redis bed state

Components 20

Clients and entry

Browser clients public/index.html
Load simulator src/sim/cli.js
nginx gateway nginx.conf

API workflows

REST and WS API src/api.js
Bed dispatch src/api.js
Transfer requests src/api.js
Ops and replay src/api.js

Event processing

Outbox and relay src/lib/events.js
RabbitMQ topology src/lib/mq.js
Occupancy tracker src/workers.js
Notifications src/workers.js
Audit and dead letters src/workers.js
Transfer saga src/workers.js
Hold sweeper src/workers.js

State and infrastructure

Hospital seeding src/seed.js
Runtime configuration src/config.js
Redis bed state src/lib/redis.js
Postgres ledger src/lib/db.js

Live operations

Metrics src/lib/metrics.js
Realtime fan-out src/lib/rt.js

Connections 40

Browser clients → nginx gateway: REST and WebSocket README.md
nginx gateway → REST and WS API: routes requests README.md
Load simulator → REST and WS API: posts demo requests src/sim/cli.js
REST and WS API → Bed dispatch: handles dispatch src/api.js
REST and WS API → Transfer requests: handles transfers src/api.js
REST and WS API → Ops and replay: serves ops and replay src/api.js
REST and WS API → Redis bed state: reserves and reads beds README.md
REST and WS API → Postgres ledger: records patient state src/api.js
REST and WS API → Outbox and relay: emits events src/api.js
REST and WS API → Hospital seeding: seeds and syncs src/api.js
REST and WS API → Metrics: records metrics src/api.js
REST and WS API → Realtime fan-out: publishes bed updates src/api.js
Bed dispatch → Redis bed state: atomic reservation README.md
Bed dispatch → Postgres ledger: stores patient src/api.js
Bed dispatch → Outbox and relay: writes outbox event src/api.js
Transfer requests → Redis bed state: holds receiver bed README.md
Transfer requests → Postgres ledger: stores transfer src/api.js
Transfer requests → Outbox and relay: emits transfer event src/api.js
Ops and replay → Postgres ledger: reads dead letters src/api.js
Ops and replay → RabbitMQ topology: replays messages src/api.js
Hospital seeding → Postgres ledger: seeds hospitals src/seed.js
Hospital seeding → Redis bed state: rebuilds bed state src/seed.js
Outbox and relay → Postgres ledger: writes outbox src/lib/events.js
Outbox and relay → RabbitMQ topology: relays confirmed events src/lib/events.js
RabbitMQ topology → Occupancy tracker: delivers events README.md
RabbitMQ topology → Notifications: delivers events README.md
RabbitMQ topology → Audit and dead letters: delivers events and DLQ README.md
RabbitMQ topology → Transfer saga: delivers events README.md
Occupancy tracker → Postgres ledger: updates occupancy src/workers.js
Notifications → Postgres ledger: stores notifications src/workers.js
Notifications → Realtime fan-out: publishes notifications src/workers.js
Audit and dead letters → Postgres ledger: records audit and DLQ src/workers.js
Transfer saga → Postgres ledger: updates transfers src/workers.js
Transfer saga → Redis bed state: releases source bed src/workers.js
Transfer saga → Outbox and relay: emits completion events src/workers.js
Hold sweeper → Redis bed state: releases expired holds README.md
Hold sweeper → Outbox and relay: emits expiry events src/workers.js
Occupancy tracker → Metrics: records processing src/workers.js
REST and WS API → Realtime fan-out: streams updates to clients README.md
Realtime fan-out → Redis bed state: publishes and subscribes src/lib/rt.js

Drawn by GitDiagram on November 13, 2026 from the repository's file tree, README and source files. Read as Markdown ·

How shanigarapusheshanth2007-wq/hackathon works

Main entry points: api.js REST and WS API · db.js Postgres ledger · events.js Outbox and relay · redis.js Redis bed state

Connections 40

Browser clients → nginx gateway: REST and WebSocket README.md
nginx gateway → REST and WS API: routes requests README.md
Load simulator → REST and WS API: posts demo requests src/sim/cli.js
REST and WS API → Bed dispatch: handles dispatch src/api.js
REST and WS API → Transfer requests: handles transfers src/api.js
REST and WS API → Ops and replay: serves ops and replay src/api.js
REST and WS API → Redis bed state: reserves and reads beds README.md
REST and WS API → Postgres ledger: records patient state src/api.js
REST and WS API → Outbox and relay: emits events src/api.js
REST and WS API → Hospital seeding: seeds and syncs src/api.js
REST and WS API → Metrics: records metrics src/api.js
REST and WS API → Realtime fan-out: publishes bed updates src/api.js
Bed dispatch → Redis bed state: atomic reservation README.md
Bed dispatch → Postgres ledger: stores patient src/api.js
Bed dispatch → Outbox and relay: writes outbox event src/api.js
Transfer requests → Redis bed state: holds receiver bed README.md
Transfer requests → Postgres ledger: stores transfer src/api.js
Transfer requests → Outbox and relay: emits transfer event src/api.js
Ops and replay → Postgres ledger: reads dead letters src/api.js
Ops and replay → RabbitMQ topology: replays messages src/api.js
Hospital seeding → Postgres ledger: seeds hospitals src/seed.js
Hospital seeding → Redis bed state: rebuilds bed state src/seed.js
Outbox and relay → Postgres ledger: writes outbox src/lib/events.js
Outbox and relay → RabbitMQ topology: relays confirmed events src/lib/events.js
RabbitMQ topology → Occupancy tracker: delivers events README.md
RabbitMQ topology → Notifications: delivers events README.md
RabbitMQ topology → Audit and dead letters: delivers events and DLQ README.md
RabbitMQ topology → Transfer saga: delivers events README.md
Occupancy tracker → Postgres ledger: updates occupancy src/workers.js
Notifications → Postgres ledger: stores notifications src/workers.js
Notifications → Realtime fan-out: publishes notifications src/workers.js
Audit and dead letters → Postgres ledger: records audit and DLQ src/workers.js
Transfer saga → Postgres ledger: updates transfers src/workers.js
Transfer saga → Redis bed state: releases source bed src/workers.js
Transfer saga → Outbox and relay: emits completion events src/workers.js
Hold sweeper → Redis bed state: releases expired holds README.md
Hold sweeper → Outbox and relay: emits expiry events src/workers.js
Occupancy tracker → Metrics: records processing src/workers.js
REST and WS API → Realtime fan-out: streams updates to clients README.md
Realtime fan-out → Redis bed state: publishes and subscribes src/lib/rt.js

Drawn by GitDiagram on November 13, 2026 from the repository's file tree, README and source files. Read as Markdown ·