Build a Dynamic Notification Engine with NestJS, BullMQ & Redis

BullMQ provides reliable queuing, retries, and delayed jobs, so notifications are processed asynchronously without blocking API requests and retry automatically if a provider fails.

Yes. By storing templates and provider config in the database, you can update content and switch providers at runtime without shipping new code.

Redis backs BullMQ queues and can also cache templates and rate-limit sends, keeping the engine fast and decoupled from the main request cycle.