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Summary

This PR introduces a production-grade background job processing system using BullMQ + Redis.

What I changed

  • Added JobsModule with JobsService that creates and manages BullMQ queues and workers.
  • Implemented queue processors for: notifications, analytics aggregation, data cleanup, and scheduled/cron jobs.
  • Added retry/exponential backoff and dead-letter queue handling.
  • Added JobsController to enqueue jobs at POST /api/1/jobs/:queue.
  • Integrated Bull Board for monitoring; available at /admin/queues when enabled.
  • Added unit tests (including repository mocks) and updated test scaffolding to avoid Redis dependency.
  • Registered JobsModule in AppModule and mounted Bull Board in main.ts when available.

How to run locally

  1. Start Redis (or set REDIS_URL to a reachable Redis instance).
  2. From BackEnd folder install packages:
npm install @nestjs/bullmq bullmq ioredis @bull-board/api @bull-board/express
npm install
  1. Build and start the API
cd BackEnd
npm run build
npm start
  1. Open Bull Board at http://localhost:3001/admin/queues (if mounted).

Notes & Next Steps

  • Consider wiring processors to actual services (NotificationsModule, AnalyticsModule) via DI.
  • Add integration tests that run against a disposable Redis instance (Docker).
  • Add authentication/ACL for Bull Board in production.