> For the complete documentation index, see [llms.txt](https://shoppinpal.gitbook.io/docs-shoppinpal-com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://shoppinpal.gitbook.io/docs-shoppinpal-com/9.-queues-and-workers.md).

# 9. Queues & Workers

A Queue+Worker infrastructure is meant:

* to run asynchronous jobs,
* scale up & down easily.

A `message` contains the data required to run a job. A `Queue` is where the messages are posted, its like a job board. A `Worker` performs all the heavy lifting and finishes the job based on the `message`.