* Plugin Name: LiteSpeed Cache - Object Cache (Drop-in)
* Plugin URI: https://www.litespeedtech.com/products/cache-plugins/wordpress-acceleration
* Description: High-performance page caching and site optimization from LiteSpeed.
* Author: LiteSpeed Technologies
* Author URI: https://www.litespeedtech.com
defined('WPINC') || exit;
!defined('LSCWP_OBJECT_CACHE') && define('LSCWP_OBJECT_CACHE', true);
// Initialize const `LSCWP_DIR` and locate LSCWP plugin folder
$lscwp_dir = (defined('WP_PLUGIN_DIR') ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins') . '/litespeed-cache/';
// Use plugin as higher priority than MU plugin
if (!file_exists($lscwp_dir . 'litespeed-cache.php')) {
// Check if is mu plugin or not
$lscwp_dir = (defined('WPMU_PLUGIN_DIR') ? WPMU_PLUGIN_DIR : WP_CONTENT_DIR . '/mu-plugins') . '/litespeed-cache/';
if (!file_exists($lscwp_dir . 'litespeed-cache.php')) {
$data_file = WP_CONTENT_DIR . '/.litespeed_conf.dat';
$lib_file = $lscwp_dir . 'src/object.lib.php';
// Can't find LSCWP location, terminate object cache process
if (!$lscwp_dir || !file_exists($data_file) || (!file_exists($lib_file))) {
if (!is_admin()) { // Bypass object cache for frontend
require_once ABSPATH . WPINC . '/cache.php';
$err = 'Can NOT find LSCWP path for object cache initialization in ' . __FILE__;
add_action(is_network_admin() ? 'network_admin_notices' : 'admin_notices', function () use (&$err) {
if (!LSCWP_OBJECT_CACHE) { // Disable cache
wp_using_ext_object_cache(false);
// Init object cache & LSCWP
else if (file_exists($lib_file)) {