bullmq-patterns

What problem does it solve?

BullMQ patterns solve the complexity of building scalable, reliable, Redis-backed job queues by providing structured models for producers, queues, and workers, along with flow control, retries, and scheduling to reduce boilerplate and ensure robust error handling.

Core Features & Use Cases

• Standard jobs: enqueue and process regular tasks with configurable concurrency and retries.
• Delayed and repeatable jobs: schedule one-off and recurring tasks with precise timing.
• Job flows and dependencies: orchestrate multi-step workflows using FlowProducer and child jobs.
• Worker patterns: embrace sandboxed processors, graceful shutdown, and concurrency tuning for stability.
• Error handling & retries: implement backoff strategies, dead-letter queues, and event monitoring.
• NestJS integration: seamless usage with NestJS BullMQ for dependency injection and processing.
• Rate limiting & monitoring: throttle external calls and observe queue health and performance.
• Progress tracking: report progress from workers to external clients or dashboards.

Quick Start

Set up a BullMQ queue and worker for processing sample jobs and demonstrate a retry-enabled workflow.