Hello, I'm developing a system in PHP where it works with lists of IPTV stored in services like pastebin. The user submits a url such as ( link ) in a form and my script will parse row by line of list contents. The problem is that the server takes too long to respond when the list is too large. So my idea is to make the request using ajax. But as the server may be slow to respond, the user can continue browsing the site, my big question is that if the server sends the response of the request there will be some problem.
Adding More Information:
It is a site that has a user panel, I want the freedom of it to be able to submit a list of these and as long as the server does not send the response, it continues to navigate normally in the site.