Task Queues Are the Backbone of AI Systems

One of the least glamorous components of the system turned out to be one of the most important: the task queue.

Queues ensure that work is processed in the correct order. They prevent duplicate execution—the same task doesn't run twice because it's already in progress. They make failures recoverable: if a task fails, it can be retried or moved to a dead-letter queue without losing the rest of the pipeline.

Without a queue, agents collide. Tasks pile up with no ordering guarantees. Retries happen ad hoc. State drifts.

With a queue, automation becomes predictable. You know what's running, what's pending, and what failed. It's not exciting. It's essential.