When I first learned about queues and background workers, I imagined something like this:

request comes in

job goes into queue

worker picks it up immediately

done

In my head, everything was basically instant.

But when you actually run a real system, it doesn’t behave like that.

There is always a gap

Between:

pushing a job into the queue

and a worker picking it up

There’s always a small delay.

Sometimes tiny. Sometimes noticeable.

And that gap changes how the system feels .

Why that matters

That delay is what makes things like:

async processing feel “slow” sometimes

jobs appear “stuck”

ordering behave differently than expected

For example:

you upload something

nothing seems to happen for a moment

then suddenly everything completes

That’s not a bug.…