Run PHP code after ending the HTTP request

Question

I'm writing a simple code to simply show to clients, data that is actually loaded from another HTTP server. The problem is that loading it from the remote server can take up to multiple seconds, and I don't want that much page load delay. So, I make my server cache a copy of this data. So that whenever a client sends a request to my server, it sends the ready-loaded copy and then loads a new copy from the remote server to update the local copy in case any changes were made.

So here's my pseudo code:

if(file_exists($cache_path)){
    echo file_get_contents($cache_path);
    // I need to end the HTTP request and close the connection here while continuing with the code.
    $uptodate_content = file_get_contents("https://docs.google.com/document/export?format=pdf&id=$id");
    // I don't want the user to wait for nothing, until this line.
}
else {
    $uptodate_content = file_get_contents("https://someremotehost.com/someresource");
    echo $uptodate_content;
}
echo file_put_contents($cache_path, $uptodate_content);

Answer 1

Hi
I think the best solution is using a queue
For example if you use the the queue, you can send it to the queue and then your consumer can pick it from the queue when it has time and user do not need to wait for it
This link is helpful
And this link will help you to use redis for this problem