How to prevent people bypassing my server cache? – Shopify

I own a Shopify store that does flash sales. It uses cloudflare to manage the server caching of my products.json file. However, it seems like people are able to monitor my products.json and bypass the cache. I want the cache there because it reduces server load and also prevents people from botting my sales because they can’t see exactly when I update my products.

They are constantly receiving X-Cache: miss when I’m expecting to return hit, server.

Does anyone know how they might be doing this and how I can go about stopping it?

Thanks.