Que

Leverages PostgreSQL's in-memory advisory locks for high concurrency, avoiding disk I/O bottlenecks and enabling CPU-bound throughput under load, as highlighted in the README.

Jobs are protected within database transactions, ensuring they commit or rollback with other data changes, providing exceptional reliability and preventing job loss during failures.

If a worker process crashes, jobs are automatically released and become available for other workers, eliminating stuck or ambiguous job states without manual intervention.

Uses existing PostgreSQL setup, reducing dependencies like Redis and allowing atomic backups of jobs and application data together, as noted in the value proposition.