Forcing an image from a dynamic URL to refresh faster

I have a column in a Glide table where I am making use of an external service to generate images via a dynamic URL.

It’s highly similar to this dynamic URL: https://via.placeholder.com/200 (if you change the number, it will change the image size).

Now while updating the dynamic URL in the Glide table only takes 3 seconds (from a zap), it takes about 30 seconds for the new image to ‘refresh’ and show on the front end for the user.

What I’d like it to do would be to refresh much faster.

Any ideas as to how this can be achieved?

Thank you