Fixing Slow wc-ajax=get_refreshed_fragments in WooCommerce – Reduce AJAX Calls

Contents: Disable wc-ajax=get_refreshed_fragments on Non-Cart Pages Reduce Frequency of Cart Updates Enable AJAX Caching Optimize WooCommerce Performance Summary of Fixes

The wc-ajax=get_refreshed_fragments request in WooCommerce is responsible for updating the cart dynamically using AJAX. However, it can slow down page load times due to frequent AJAX requests, especially on high-traffic sites.

Disable wc-ajax=get_refreshed_fragments on Non-Cart Pages

By default, WooCommerce triggers AJAX cart updates on every page. To prevent this:

Add This Code to functions.php

add_action('wp_enqueue_scripts', function() {
    if (!is_cart() && !is_checkout()) {
        wp_dequeue_script('wc-cart-fragments');
        wp_deregister_script('wc-cart-fragments');
    }
}, 11);

This disables AJAX cart fragments on all pages except cart & checkout.

Reduces unnecessary server load & improves page speed.

Reduce Frequency of Cart Updates

WooCommerce checks the cart on every page load. To limit this:

Delay Cart Updates with a Custom Filter

add_filter('woocommerce_cart_hash', function($hash) {
    if (!is_cart() && !is_checkout()) {
        return false;  // Prevent unnecessary AJAX calls
    }
    return $hash;
});

This prevents WooCommerce from triggering AJAX cart updates when the cart hasn't changed.

Enable AJAX Caching

Instead of disabling AJAX, you can cache responses to avoid frequent server hits.

Cache wc-ajax=get_refreshed_fragments in Nginx

Add this to your Nginx configuration:

location ~* wc-ajax=get_refreshed_fragments {
    expires 30m;
    add_header Cache-Control "public, max-age=1800";
}

This caches AJAX responses for 30 minutes, reducing load time.

Cache in Apache (.htaccess File)

<IfModule mod_expires.c>
    ExpiresByType application/json "access plus 30 minutes"
</IfModule>

This reduces repeated AJAX requests by caching responses.

Optimize WooCommerce Performance

Use Object Caching (Redis or Memcached)

WooCommerce stores cart data in the database, which slows down AJAX requests.

For Redis Caching:

Install Redis:
```
sudo apt install redis-server
```

Enable Redis in wp-config.php:

define('WP_CACHE', true);
define('WP_REDIS_HOST', '127.0.0.1');

Restart Redis:
```
sudo systemctl restart redis
```

This speeds up WooCommerce AJAX calls by caching cart data.

Summary of Fixes

Issue	Fix
AJAX calls on all pages	Disable with `wp_dequeue_script('wc-cart-fragments')`
Frequent cart updates	Reduce frequency with `woocommerce_cart_hash` filter
High server load from AJAX requests	Cache responses using Nginx or Apache
Slow database queries	Enable Redis or Memcached caching

Now WooCommerce loads faster, and AJAX requests are optimized!

Fixing Slow wc-ajax=get_refreshed_fragments in WooCommerce – Reduce AJAX Calls

Disable wc-ajax=get_refreshed_fragments on Non-Cart Pages

Add This Code to functions.php

Reduce Frequency of Cart Updates

Delay Cart Updates with a Custom Filter

Enable AJAX Caching

Cache wc-ajax=get_refreshed_fragments in Nginx

Cache in Apache (.htaccess File)

Optimize WooCommerce Performance

Use Object Caching (Redis or Memcached)

Summary of Fixes

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Fixing Slow wc-ajax=get_refreshed_fragments in WooCommerce – Reduce AJAX Calls

Disable wc-ajax=get_refreshed_fragments on Non-Cart Pages

Add This Code to functions.php

Reduce Frequency of Cart Updates

Delay Cart Updates with a Custom Filter

Enable AJAX Caching

Cache wc-ajax=get_refreshed_fragments in Nginx

Cache in Apache (.htaccess File)

Optimize WooCommerce Performance

Use Object Caching (Redis or Memcached)

Summary of Fixes

Hosting

Cloud Solution

For You

VDS

Website Builders

Our services

Client Area

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