I have a page, it randomly displays 2 news, and the user selects the one that is better. Only 10 news.
After the voice, the data is sent to the POST request for the handle page, where +1 is entered in the database for the best news, then again the redirect is again to 2, other news already.
Question: how to protect rating news from cheating. POST request for the same news can be repeated a bunch of times ...
I will add: the user can vote indefinitely . But the news appears randomly. I need to protect only the repetition of the same POST request.
Note: On the site you need to do without registration