Megrim Redis Microservice (Spring Boot)

Real-time order and terminal coordination service for Megrim. Uses Redis for active order state and WebSockets for live updates between customers and merchant terminals.

What It Does

• Accepts order actions over WebSocket
• Validates and forwards order processing to the Postgres service
• Stores active order state in Redis
• Broadcasts updates to terminal sessions
• Sends push notifications (APNs)

Tech Stack

• Java + Spring Boot
• Redis (Jedis)
• WebSockets

Local Development

1. Ensure Redis is running locally.
2. Set API_ENV to match the Postgres environment.
3. Run with Maven:

   ./mvnw spring-boot:run

Configuration

• API_ENV: test or live
• Redis host/port are in src/main/resources/application.properties

Related Services

• Postgres microservice: order processing + business logic
• Flutter app: customer ordering + live updates
• NextJS admin: merchant dashboard