Check if the request is unique

If it's a unique hit, return 1, else return 0

### How to implement this?
One idea is to save a cookie in the browser and set an expiry for say 14 days. Any request sent from same browser within 14 days won't be counted twice.

Start by locating the request-counting entry point in the repository and reviewing how hits are currently recorded. Define the behavior for a browser's first request and subsequent requests within 14 days, including the returned 1 or 0 value; done means repeated requests from the same browser are not counted twice.

Written by the indexing model from the issue text.