This produces a 'Vary: X-Requested-With' header on the response of decorated view functions, which indicates to the browser (or intermediate proxy servers) that the response may/will will be different for XHR and non-XHR requests.
This produces a 'Vary: X-Requested-With' header on the response of decorated view functions, which indicates to the browser (or intermediate proxy servers) that the response may/will will be different for XHR and non-XHR requests.