When users go to /checkout, they will be redirected to /checkout/cart.
1. Go to domain.com/checkout --> it will redirect them to /checkout/cart because there is no product
2. Add any product
3. Go to domain.com/checkout
4. User will be redirect to /checkout/cart
When looking at the Network from Chrome, the /checkout page was served by disk cache and redirect to cart.
Using Built-In Cache