Setting Memcached on prestashop, (from Advanced parameters> Performance) I have problems with updating the quantities of the products:
for example, if I cancel an order, then the availabilities of the canceled variants are no longer processed. Even by manually acting on availability (for example by changing the quantity from 4 to 3), and by saving, the green wording "Settings updated" appears, but then in reality if I update the page the quantity always remains at 4 as if it had not been updated.
How can I solve it?