Queue & Background Jobs Toolkit

Everything you need to move work off the request path. Covers BullMQ (Redis), PostgreSQL-based queues (SKIP LOCKED), AWS SQS, retry strategies (exponential, jitter, linear), dead letter queues, monitoring, idempotency, job chaining, transactional outbox pattern, and graceful shutdown. Includes an architecture decision guide to pick the right queue backend for your use case. 16KB of battle-tested TypeScript patterns — not theory, not docs links, but copy-paste-ready implementations that handle the edge cases (duplicate delivery, worker crashes, thundering herd, backpressure).