Skip to content

Instantly share code, notes, and snippets.

@leowebguy
Last active August 31, 2020 15:28
Show Gist options
  • Save leowebguy/dab3e498e68917fb2938 to your computer and use it in GitHub Desktop.
Save leowebguy/dab3e498e68917fb2938 to your computer and use it in GitHub Desktop.
Parallelize downloads across hostnames for WordPress. Useful to boost static resources load speed on websites. Recommended by GTmetrix, Pingdom, Google Speed Insights, and others.
<?php
/******
Parallelize downloads across hostnames for WordPress.
Useful to boost static resources load speed on websites.
Recommended by GTmetrix, Pingdom, Google Speed Insights, and others.
See full post > https://medium.com/p/32e9dc2fec0c
In order to work properly, all subdomains/hostnames MUST have the same structure/path. Ex:
http://mydomain.com/wp-content/uploads/2015/11/myimage.jpg
http://media1.mydomain.com/wp-content/uploads/2015/11/myimage.jpg
http://media2.mydomain.com/wp-content/uploads/2015/11/myimage.jpg
Add to functions.php
******/
function parallelize_hostnames($url, $id) {
$hostname = par_get_hostname($url); //call supplemental function
$url = str_replace(parse_url(get_bloginfo('url'), PHP_URL_HOST), $hostname, $url);
return $url;
}
function par_get_hostname($name) {
$subdomains = array('media1.mydomain.com','media2.mydomain.com'); //add your subdomains here, as many as you want.
$host = abs(crc32(basename($name)) % count($subdomains));
$hostname = $subdomains[$host];
return $hostname;
}
add_filter('wp_get_attachment_url', 'parallelize_hostnames', 10, 2);
@PraneethKarnena
Copy link

This function do exist in W3 Total Cache CDN tab.

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment