What is a worker

When a user wants to upload a photo, it is sent to a queue. A good visualization of this is a fast food restaurant.

• Each order is like a queue job.
• Each order needs a worker to fulfill it, so it will sit in the queue until a worker picks it up.
  • Think of the queue as a line, so each job will wait till it is at the front to be picked up.
• When a worker picks up a job, it will asynchronously process it alongside other workers.
  • This means if we have 5 workers, we can handle 5 orders at the same time
  • asynchronous = at the same time

In our case...

• We use workers to handle uploading images to the AWS S3.
• Using a Database, we can track the progress of the image as it is sitting in the queue and being processed.