golden hour

/home/godaofbq/cellsonic-usa.com/wp-content/plugins/litespeed-cache/src

File/Folder	Size	Actions
activation.cls.php	17.62 KB
admin-display.cls.php	48.76 KB
admin-settings.cls.php	12.77 KB
admin.cls.php	6.13 KB
api.cls.php	10.44 KB
avatar.cls.php	9.25 KB
base.cls.php	37.66 KB
cdn	-
cdn.cls.php	17.76 KB
cloud-auth-callback.trait.php	10.43 KB
cloud-auth-ip.trait.php	4.33 KB
cloud-auth.trait.php	9.38 KB
cloud-misc.trait.php	10.32 KB
cloud-node.trait.php	5.95 KB
cloud-queue-svc.cls.php	9.33 KB
cloud-request.trait.php	19.68 KB
cloud.cls.php	7.32 KB
conf.cls.php	19.53 KB
control.cls.php	24.35 KB
core.cls.php	21.53 KB
crawler-map.cls.php	22.3 KB
crawler.cls.php	44 KB
css.cls.php	7.26 KB
data.cls.php	22.2 KB
data.upgrade.func.php	6.41 KB
data_structure	-
db-optm.cls.php	15.35 KB
debug2.cls.php	18.4 KB
doc.cls.php	5.45 KB
error.cls.php	7.35 KB
esi.cls.php	31.37 KB
file.cls.php	13.75 KB
guest.cls.php	2.75 KB
gui.cls.php	35.09 KB
health.cls.php	4.66 KB
htaccess.cls.php	29.81 KB
img-optm-manage.trait.php	31.25 KB
img-optm-pull.trait.php	22.1 KB
img-optm-send.trait.php	20.77 KB
img-optm.cls.php	5.25 KB
import.cls.php	4.29 KB
import.preset.cls.php	5.5 KB
lang.cls.php	17.02 KB
localization.cls.php	4.03 KB
media.cls.php	44.06 KB
metabox.cls.php	5.29 KB
object-cache-wp.cls.php	18.82 KB
object-cache.cls.php	21.82 KB
object.lib.php	13.85 KB
optimax.cls.php	8.94 KB
optimize.cls.php	38.74 KB
optimizer.cls.php	12.71 KB
placeholder.cls.php	17.64 KB
purge.cls.php	35.48 KB
report.cls.php	7.53 KB
rest.cls.php	7.95 KB
root.cls.php	14.29 KB
router.cls.php	20.86 KB
str.cls.php	3.08 KB
tag.cls.php	9.26 KB
task.cls.php	8.98 KB
tool.cls.php	4.58 KB
ucss.cls.php	7.34 KB
utility.cls.php	27.11 KB
vary.cls.php	21.33 KB
vpi.cls.php	4.25 KB

Edit: object-cache.cls.php

<?php
/**
 * The object cache class.
 *
 * @since       1.8
 * @package     LiteSpeed
 */

namespace LiteSpeed;

defined( 'WPINC' ) || exit();

require_once dirname( __DIR__ ) . '/autoload.php';

/**
 * Object cache handler using Redis or Memcached.
 *
 * NOTE: this class may be included without initialized core.
 *
 * @since 1.8
 */
class Object_Cache extends Root {
	const LOG_TAG = '[Object_Cache]';

/**
	 * Debug option key.
	 *
	 * @var string
	 */
	const O_DEBUG = 'debug';

/**
	 * Object cache enable key.
	 *
	 * @var string
	 */
	const O_OBJECT = 'object';

/**
	 * Object kind (Redis/Memcached).
	 *
	 * @var string
	 */
	const O_OBJECT_KIND = 'object-kind';

/**
	 * Object host.
	 *
	 * @var string
	 */
	const O_OBJECT_HOST = 'object-host';

/**
	 * Object port.
	 *
	 * @var string
	 */
	const O_OBJECT_PORT = 'object-port';

/**
	 * Object life/TTL.
	 *
	 * @var string
	 */
	const O_OBJECT_LIFE = 'object-life';

/**
	 * Persistent connection flag.
	 *
	 * @var string
	 */
	const O_OBJECT_PERSISTENT = 'object-persistent';

/**
	 * Admin cache flag.
	 *
	 * @var string
	 */
	const O_OBJECT_ADMIN = 'object-admin';

/**
	 * DB index for Redis.
	 *
	 * @var string
	 */
	const O_OBJECT_DB_ID = 'object-db_id';

/**
	 * Username for auth.
	 *
	 * @var string
	 */
	const O_OBJECT_USER = 'object-user';

/**
	 * Password for auth.
	 *
	 * @var string
	 */
	const O_OBJECT_PSWD = 'object-pswd';

/**
	 * Global groups list.
	 *
	 * @var string
	 */
	const O_OBJECT_GLOBAL_GROUPS = 'object-global_groups';

/**
	 * Non-persistent groups list.
	 *
	 * @var string
	 */
	const O_OBJECT_NON_PERSISTENT_GROUPS = 'object-non_persistent_groups';

/**
	 * Connection instance.
	 *
	 * @var \Redis|\Memcached|null
	 */
	private $_conn;

/**
	 * Debug config.
	 *
	 * @var bool
	 */
	private $_cfg_debug;

/**
	 * Whether OC is enabled.
	 *
	 * @var bool
	 */
	private $_cfg_enabled;

/**
	 * True => Redis, false => Memcached.
	 *
	 * @var bool
	 */
	private $_cfg_method;

/**
	 * Host name.
	 *
	 * @var string
	 */
	private $_cfg_host;

/**
	 * Port number.
	 *
	 * @var int|string
	 */
	private $_cfg_port;

/**
	 * Use persistent connection.
	 *
	 * @var bool
	 */
	private $_cfg_persistent;

/**
	 * Cache admin pages.
	 *
	 * @var bool
	 */
	private $_cfg_admin;

/**
	 * Redis DB index.
	 *
	 * @var int
	 */
	private $_cfg_db;

/**
	 * Auth username.
	 *
	 * @var string
	 */
	private $_cfg_user;

/**
	 * Auth password.
	 *
	 * @var string
	 */
	private $_cfg_pswd;

/**
	 * 'Redis' or 'Memcached'.
	 *
	 * @var string
	 */
	private $_oc_driver = 'Memcached'; // Redis or Memcached.

/**
	 * Global groups.
	 *
	 * @var array
	 */
	private $_global_groups = [];

/**
	 * Non-persistent groups.
	 *
	 * @var array
	 */
	private $_non_persistent_groups = [];

/**
	 * Init.
	 *
	 * NOTE: this class may be included without initialized core.
	 *
	 * @since  1.8
	 *
	 * @param array|false $cfg Optional configuration to bootstrap without core.
	 */
	public function __construct( $cfg = false ) {
		if ( $cfg ) {
			if ( ! is_array( $cfg[ Base::O_OBJECT_GLOBAL_GROUPS ] ) ) {
				$cfg[ Base::O_OBJECT_GLOBAL_GROUPS ] = explode( "\n", $cfg[ Base::O_OBJECT_GLOBAL_GROUPS ] );
			}
			if ( ! is_array( $cfg[ Base::O_OBJECT_NON_PERSISTENT_GROUPS ] ) ) {
				$cfg[ Base::O_OBJECT_NON_PERSISTENT_GROUPS ] = explode( "\n", $cfg[ Base::O_OBJECT_NON_PERSISTENT_GROUPS ] );
			}
			$this->_cfg_debug             = $cfg[ Base::O_DEBUG ] ? $cfg[ Base::O_DEBUG ] : false;
			$this->_cfg_method            = $cfg[ Base::O_OBJECT_KIND ] ? true : false;
			$this->_cfg_host              = $cfg[ Base::O_OBJECT_HOST ];
			$this->_cfg_port              = $cfg[ Base::O_OBJECT_PORT ];
			$this->_cfg_persistent        = $cfg[ Base::O_OBJECT_PERSISTENT ];
			$this->_cfg_admin             = $cfg[ Base::O_OBJECT_ADMIN ];
			$this->_cfg_db                = $cfg[ Base::O_OBJECT_DB_ID ];
			$this->_cfg_user              = $cfg[ Base::O_OBJECT_USER ];
			$this->_cfg_pswd              = $cfg[ Base::O_OBJECT_PSWD ];
			$this->_global_groups         = $cfg[ Base::O_OBJECT_GLOBAL_GROUPS ];
			$this->_non_persistent_groups = $cfg[ Base::O_OBJECT_NON_PERSISTENT_GROUPS ];

if ( $this->_cfg_method ) {
				$this->_oc_driver = 'Redis';
			}
			$this->_cfg_enabled = $cfg[ Base::O_OBJECT ] && class_exists( $this->_oc_driver ) && $this->_cfg_host;
		} elseif ( defined( 'LITESPEED_CONF_LOADED' ) ) { // If OC is OFF, will hit here to init OC after conf initialized
			$this->_cfg_debug             = $this->conf( Base::O_DEBUG ) ? $this->conf( Base::O_DEBUG ) : false;
			$this->_cfg_method            = $this->conf( Base::O_OBJECT_KIND ) ? true : false;
			$this->_cfg_host              = $this->conf( Base::O_OBJECT_HOST );
			$this->_cfg_port              = $this->conf( Base::O_OBJECT_PORT );
			$this->_cfg_persistent        = $this->conf( Base::O_OBJECT_PERSISTENT );
			$this->_cfg_admin             = $this->conf( Base::O_OBJECT_ADMIN );
			$this->_cfg_db                = $this->conf( Base::O_OBJECT_DB_ID );
			$this->_cfg_user              = $this->conf( Base::O_OBJECT_USER );
			$this->_cfg_pswd              = $this->conf( Base::O_OBJECT_PSWD );
			$this->_global_groups         = $this->conf( Base::O_OBJECT_GLOBAL_GROUPS );
			$this->_non_persistent_groups = $this->conf( Base::O_OBJECT_NON_PERSISTENT_GROUPS );

if ( $this->_cfg_method ) {
				$this->_oc_driver = 'Redis';
			}
			$this->_cfg_enabled = $this->conf( Base::O_OBJECT ) && class_exists( $this->_oc_driver ) && $this->_cfg_host;
		} elseif ( defined( 'self::CONF_FILE' ) && file_exists( WP_CONTENT_DIR . '/' . self::CONF_FILE ) ) {
			// Get cfg from _data_file.
			// Use self::const to avoid loading more classes.
			$cfg = \json_decode( file_get_contents( WP_CONTENT_DIR . '/' . self::CONF_FILE ), true );
			if ( ! empty( $cfg[ self::O_OBJECT_HOST ] ) ) {
				$this->_cfg_debug             = ! empty( $cfg[ Base::O_DEBUG ] ) ? $cfg[ Base::O_DEBUG ] : false;
				$this->_cfg_method            = ! empty( $cfg[ self::O_OBJECT_KIND ] ) ? $cfg[ self::O_OBJECT_KIND ] : false;
				$this->_cfg_host              = $cfg[ self::O_OBJECT_HOST ];
				$this->_cfg_port              = $cfg[ self::O_OBJECT_PORT ];
				$this->_cfg_persistent        = ! empty( $cfg[ self::O_OBJECT_PERSISTENT ] ) ? $cfg[ self::O_OBJECT_PERSISTENT ] : false;
				$this->_cfg_admin             = ! empty( $cfg[ self::O_OBJECT_ADMIN ] ) ? $cfg[ self::O_OBJECT_ADMIN ] : false;
				$this->_cfg_db                = ! empty( $cfg[ self::O_OBJECT_DB_ID ] ) ? $cfg[ self::O_OBJECT_DB_ID ] : 0;
				$this->_cfg_user              = ! empty( $cfg[ self::O_OBJECT_USER ] ) ? $cfg[ self::O_OBJECT_USER ] : '';
				$this->_cfg_pswd              = ! empty( $cfg[ self::O_OBJECT_PSWD ] ) ? $cfg[ self::O_OBJECT_PSWD ] : '';
				$this->_global_groups         = ! empty( $cfg[ self::O_OBJECT_GLOBAL_GROUPS ] ) ? $cfg[ self::O_OBJECT_GLOBAL_GROUPS ] : [];
				$this->_non_persistent_groups = ! empty( $cfg[ self::O_OBJECT_NON_PERSISTENT_GROUPS ] ) ? $cfg[ self::O_OBJECT_NON_PERSISTENT_GROUPS ] : [];

if ( $this->_cfg_method ) {
					$this->_oc_driver = 'Redis';
				}
				$this->_cfg_enabled = class_exists( $this->_oc_driver ) && $this->_cfg_host;
			} else {
				$this->_cfg_enabled = false;
			}
		} else {
			$this->_cfg_enabled = false;
		}

// If OC not available, mark failure so OC methods return false early.
		// NOTE: Do NOT call wp_using_ext_object_cache(false) here — it causes
		// "Cannot redeclare wp_cache_init()" fatal on multisite (second call
		// to wp_start_object_cache() would load cache.php again).
		if ( ! $this->_cfg_enabled ) {
			! defined( 'LITESPEED_OC_FAILURE' ) && define( 'LITESPEED_OC_FAILURE', true );
		}
	}

/**
	 * Add debug.
	 *
	 * @since  6.3
	 * @access private
	 *
	 * @param string $text Log text.
	 * @return void
	 */
	private function debug_oc( $text ) {
		if ( defined( 'LSCWP_LOG' ) ) {
			self::debug( $text );
			return;
		}

if ( Base::VAL_ON2 !== $this->_cfg_debug ) {
			return;
		}

$litespeed_data_folder = defined( 'LITESPEED_DATA_FOLDER' ) ? LITESPEED_DATA_FOLDER : 'litespeed';
		$lscwp_content_dir     = defined( 'LSCWP_CONTENT_DIR' ) ? LSCWP_CONTENT_DIR : WP_CONTENT_DIR;
		$litespeed_static_dir  = $lscwp_content_dir . '/' . $litespeed_data_folder;
		$log_path_prefix       = $litespeed_static_dir . '/debug/';
		$log_file              = $log_path_prefix . Debug2::FilePath( 'debug' );

if ( file_exists( $log_path_prefix . 'index.php' ) && file_exists( $log_file ) ) {
			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_error_log
			error_log(gmdate('m/d/y H:i:s') . ' - OC - ' . $text . PHP_EOL, 3, $log_file);
		}
	}

/**
	 * Check if the group belongs to transients or not.
	 *
	 * @since  1.8.3
	 * @access private
	 *
	 * @param string $group Group name.
	 * @return bool
	 */
	private function _is_transients_group( $group ) {
		return in_array( $group, [ 'transient', 'site-transient' ], true );
	}

/**
	 * Update WP object cache file config.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @param array $options Options to apply after update.
	 * @return void
	 */
	public function update_file( $options ) {
		$changed = false;

// NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used.
		$_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php';
		$_oc_wp_file  = WP_CONTENT_DIR . '/object-cache.php';

// Update cls file.
		if ( ! file_exists( $_oc_wp_file ) || md5_file( $_oc_wp_file ) !== md5_file( $_oc_ori_file ) ) {
			$this->debug_oc( 'copying object-cache.php file to ' . $_oc_wp_file );
			copy( $_oc_ori_file, $_oc_wp_file );
			$changed = true;
		}

/**
		 * Clear object cache.
		 */
		if ( $changed ) {
			$this->_reconnect( $options );
		}
	}

/**
	 * Remove object cache file.
	 *
	 * @since  1.8.2
	 * @access public
	 *
	 * @return void
	 */
	public function del_file() {
		// NOTE: When included in oc.php, `LSCWP_DIR` will show undefined, so this must be assigned/generated when used.
		$_oc_ori_file = LSCWP_DIR . 'lib/object-cache.php';
		$_oc_wp_file  = WP_CONTENT_DIR . '/object-cache.php';

if ( file_exists( $_oc_wp_file ) && md5_file( $_oc_wp_file ) === md5_file( $_oc_ori_file ) ) {
			$this->debug_oc( 'removing ' . $_oc_wp_file );
			wp_delete_file( $_oc_wp_file );
		}
	}

/**
	 * Try to build connection.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @return bool|null False on failure, true on success, null if unsupported.
	 */
	public function test_connection() {
		return $this->_connect();
	}

/**
	 * Force to connect with this setting.
	 *
	 * @since  1.8
	 * @access private
	 *
	 * @param array $cfg Reconnect configuration.
	 * @return void
	 */
	private function _reconnect( $cfg ) {
		$this->debug_oc( 'Reconnecting' );
		if ( isset( $this->_conn ) ) {
			// error_log( 'Object: Quitting existing connection!' );
			$this->debug_oc( 'Quitting existing connection' );
			$this->flush();
			$this->_conn = null;
			$this->cls( false, true );
		}

$cls = $this->cls( false, false, $cfg );
		$cls->_connect();
		if ( isset( $cls->_conn ) ) {
			$cls->flush();
		}
	}

/**
	 * Connect to Memcached/Redis server.
	 *
	 * @since  1.8
	 * @access private
	 *
	 * @return bool|null False on failure, true on success, null if driver missing.
	 */
	private function _connect() {
		if ( isset( $this->_conn ) ) {
			// error_log( 'Object: _connected' );
			return true;
		}

if ( ! class_exists( $this->_oc_driver ) || ! $this->_cfg_host ) {
			$this->debug_oc( '_oc_driver cls non existed or _cfg_host missed: ' . $this->_oc_driver . ' [_cfg_host] ' . $this->_cfg_host . ':' . $this->_cfg_port );
			return false;
		}

if ( defined( 'LITESPEED_OC_FAILURE' ) ) {
			$this->debug_oc( 'LITESPEED_OC_FAILURE const defined' );
			return false;
		}

$this->debug_oc( 'Init ' . $this->_oc_driver . ' connection to ' . $this->_cfg_host . ':' . $this->_cfg_port );

$failed = false;

/**
		 * Connect to Redis.
		 *
		 * @since  1.8.1
		 * @see https://github.com/phpredis/phpredis/#example-1
		 */
		if ( 'Redis' === $this->_oc_driver ) {
			// phpcs:ignore WordPress.PHP.DevelopmentFunctions.error_log_set_error_handler
			set_error_handler( 'litespeed_exception_handler' );
			try {
				$this->_conn = new \Redis();
				// error_log( 'Object: _connect Redis' );

if ( $this->_cfg_persistent ) {
					if ( $this->_cfg_port ) {
						$this->_conn->pconnect( $this->_cfg_host, $this->_cfg_port );
					} else {
						$this->_conn->pconnect( $this->_cfg_host );
					}
				} elseif ( $this->_cfg_port ) {
					$this->_conn->connect( $this->_cfg_host, $this->_cfg_port );
				} else {
					$this->_conn->connect( $this->_cfg_host );
				}

if ( $this->_cfg_pswd ) {
					if ( $this->_cfg_user ) {
						$this->_conn->auth( [ $this->_cfg_user, $this->_cfg_pswd ] );
					} else {
						$this->_conn->auth( $this->_cfg_pswd );
					}
				}

if ( defined( 'Redis::OPT_REPLY_LITERAL' ) ) {
					$this->debug_oc( 'Redis set OPT_REPLY_LITERAL' );
					$this->_conn->setOption( \Redis::OPT_REPLY_LITERAL, true );
				}

// Enable phpredis-level zstd compression to cut Redis memory use. Payload-level only: do NOT set OPT_SERIALIZER, LSCWP already runs maybe_serialize upstream and a second serializer would corrupt reads.
				if ( defined( 'Redis::OPT_COMPRESSION' ) && defined( 'Redis::COMPRESSION_ZSTD' ) ) {
					$this->debug_oc( 'Redis set OPT_COMPRESSION to ZSTD' );
					$this->_conn->setOption( \Redis::OPT_COMPRESSION, \Redis::COMPRESSION_ZSTD );
				}

if ( $this->_cfg_db ) {
					if ( ! $this->_conn->select( $this->_cfg_db ) ) {
						$this->debug_oc( 'Database ID is invalid' );
						$failed = true;
					}
				}

$res = $this->_conn->rawCommand('PING');

if ( 'PONG' !== $res ) {
					$this->debug_oc( 'Redis resp is wrong: ' . $res );
					$failed = true;
				}
			} catch ( \Exception $e ) {
				$this->debug_oc( 'Redis connect exception: ' . $e->getMessage() );
				$failed = true;
			} catch ( \ErrorException $e ) {
				$this->debug_oc( 'Redis connect error: ' . $e->getMessage() );
				$failed = true;
			}
			restore_error_handler();
		} else {
			// Connect to Memcached.
			if ( $this->_cfg_persistent ) {
				$this->_conn = new \Memcached( $this->_get_mem_id() );

// Check memcached persistent connection.
				if ( $this->_validate_mem_server() ) {
					// error_log( 'Object: _validate_mem_server' );
					$this->debug_oc( 'Got persistent ' . $this->_oc_driver . ' connection' );
					return true;
				}

$this->debug_oc( 'No persistent ' . $this->_oc_driver . ' server list!' );
			} else {
				// error_log( 'Object: new memcached!' );
				$this->_conn = new \Memcached();
			}

$this->_conn->addServer( $this->_cfg_host, (int) $this->_cfg_port );

/**
			 * Add SASL auth.
			 *
			 * @since  1.8.1
			 * @since  2.9.6 Fixed SASL connection @see https://www.litespeedtech.com/support/wiki/doku.php/litespeed_wiki:lsmcd:new_sasl
			 */
			if ( $this->_cfg_user && $this->_cfg_pswd && method_exists( $this->_conn, 'setSaslAuthData' ) ) {
				$this->_conn->setOption( \Memcached::OPT_BINARY_PROTOCOL, true );
				$this->_conn->setOption( \Memcached::OPT_COMPRESSION, false );
				$this->_conn->setSaslAuthData( $this->_cfg_user, $this->_cfg_pswd );
			}

// Check connection.
			if ( ! $this->_validate_mem_server() ) {
				$failed = true;
			}
		}

// If failed to connect.
		if ( $failed ) {
			$this->debug_oc( '❌ Failed to connect ' . $this->_oc_driver . ' server!' );
			$this->_conn        = null;
			$this->_cfg_enabled = false;
			! defined( 'LITESPEED_OC_FAILURE' ) && define( 'LITESPEED_OC_FAILURE', true );

// Disable ext OC flag so WP transients fall back to wp_options table.
			// After muplugins_loaded, all wp_start_object_cache() calls are done — safe to call directly.
			// Before that (early bootstrap), defer via hook to avoid multisite "Cannot redeclare" fatal.
			if ( function_exists( 'did_action' ) && did_action( 'muplugins_loaded' ) ) {
				wp_using_ext_object_cache( false );
			} elseif ( function_exists( 'add_action' ) ) {
				add_action(
					'muplugins_loaded',
					function () {
						wp_using_ext_object_cache( false );
					},
					-999
				);
			}

return false;
		}

$this->debug_oc( '✅ Connected to ' . $this->_oc_driver . ' server.' );

return true;
	}

/**
	 * Check if the connected memcached host is the one in cfg.
	 *
	 * @since  1.8
	 * @access private
	 *
	 * @return bool
	 */
	private function _validate_mem_server() {
		$mem_list = $this->_conn->getStats();
		if ( empty( $mem_list ) ) {
			return false;
		}

foreach ( $mem_list as $k => $v ) {
			if ( substr( $k, 0, strlen( $this->_cfg_host ) ) !== $this->_cfg_host ) {
				continue;
			}
			if ( ! empty( $v['pid'] ) || ! empty( $v['curr_connections'] ) ) {
				return true;
			}
		}

return false;
	}

/**
	 * Get memcached unique id to be used for connecting.
	 *
	 * @since  1.8
	 * @access private
	 *
	 * @return string
	 */
	private function _get_mem_id() {
		$mem_id = 'litespeed';
		if ( is_multisite() ) {
			$mem_id .= '_' . get_current_blog_id();
		}

return $mem_id;
	}

/**
	 * Get cache.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @param string $key   Cache key.
	 * @param string $group Optional. Cache group name.
	 * @return mixed|false
	 */
	public function get( $key, $group = '' ) {
		if ( ! $this->_cfg_enabled ) {
			return false;
		}

if ( ! $this->_can_cache( $group ) ) {
			return false;
		}

if ( ! $this->_connect() ) {
			return false;
		}

if ( 'Redis' === $this->_oc_driver ) {
			try {
				$res = $this->_conn->get( $key );
			} catch ( \RedisException $ex ) {
				$this->_redis_error( $ex );
				return false;
			}
		} else {
			$res = $this->_conn->get( $key );
		}

return $res;
	}

/**
	 * Set cache.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @param string $key    Cache key.
	 * @param mixed  $data   Data to store.
	 * @param int    $expire TTL seconds.
	 * @return bool
	 */
	public function set( $key, $data, $expire ) {
		if ( ! $this->_cfg_enabled ) {
			return false;
		}

/**
		 * To fix the Cloud callback cached as its frontend call but the hash is generated in backend
		 * Bug found by Stan at Jan/10/2020
		 */
		// if ( ! $this->_can_cache() ) {
		// return false;
		// }

if ( ! $this->_connect() ) {
			return false;
		}

// Per WP Object Cache API, expire=0 means "no expiration".
		// Key eviction is handled by the cache backend (Redis maxmemory / Memcached LRU).
		$ttl = (int) $expire;

if ( 'Redis' === $this->_oc_driver ) {
			try {
				$options = ( $ttl > 0 ) ? [ 'ex' => $ttl ] : [];
				$res     = $this->_conn->set( $key, $data, $options );
			} catch ( \RedisException $ex ) {
				$res = false;
				$this->_redis_error( $ex );
			}
		} else {
			$res = $this->_conn->set( $key, $data, $ttl );
		}

return $res;
	}

/**
	 * Check if can cache or not.
	 *
	 * @since  1.8
	 * @access private
	 *
	 * @param string $group Optional. Cache group name.
	 * @return bool
	 */
	private function _can_cache( $group = '' ) {
		// Transients always use OC regardless of Cache WP-Admin setting
		if ( $this->_is_transients_group( $group ) ) {
			return true;
		}
		if ( ! $this->_cfg_admin && defined( 'WP_ADMIN' ) ) {
			return false;
		}
		return true;
	}

/**
	 * Delete cache.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @param string $key Cache key.
	 * @return bool
	 */
	public function delete( $key ) {
		if ( ! $this->_cfg_enabled ) {
			return false;
		}

if ( ! $this->_connect() ) {
			return false;
		}

if ( 'Redis' === $this->_oc_driver ) {
			try {
				$res = $this->_conn->del( $key );
			} catch ( \RedisException $ex ) {
				$this->_redis_error( $ex );
				return false;
			}
		} else {
			$res = $this->_conn->delete( $key );
		}

return (bool) $res;
	}

/**
	 * Clear all cache.
	 *
	 * @since  1.8
	 * @access public
	 *
	 * @return bool
	 */
	public function flush() {
		if ( ! $this->_cfg_enabled ) {
			$this->debug_oc( 'bypass flushing' );
			return false;
		}

if ( ! $this->_connect() ) {
			return false;
		}

$this->debug_oc( 'flush!' );

if ( 'Redis' === $this->_oc_driver ) {
			try {
				$res = $this->_conn->flushDb();
			} catch ( \RedisException $ex ) {
				$this->_redis_error( $ex );
				return false;
			}
		} else {
			$res = $this->_conn->flush();
			$this->_conn->resetServerList();
		}

return $res;
	}

/**
	 * Log a Redis exception and surface it as an admin notice.
	 *
	 * @since 7.9
	 * @access private
	 *
	 * @param \RedisException $ex Exception raised by phpredis.
	 * @return void
	 */
	private function _redis_error( $ex ) {
		$this->debug_oc( sprintf( 'Redis op failed: %s (code: %d)', $ex->getMessage(), $ex->getCode() ) );

$this->_cfg_enabled = false;

if ( did_action( 'plugins_loaded' ) ) {
			Admin_Display::error( 'LiteSpeed Object Cache: Redis is unavailable. Check Redis server status (memory, connectivity) and the plugin debug log for details.' );
		}
	}

/**
	 * Add global groups.
	 *
	 * @since 1.8
	 * @access public
	 *
	 * @param string|string[] $groups Group(s) to add.
	 * @return void
	 */
	public function add_global_groups( $groups ) {
		if ( ! is_array( $groups ) ) {
			$groups = [ $groups ];
		}

$this->_global_groups = array_merge( $this->_global_groups, $groups );
		$this->_global_groups = array_unique( $this->_global_groups );
	}

/**
	 * Check if is in global groups or not.
	 *
	 * @since 1.8
	 * @access public
	 *
	 * @param string $group Group name.
	 * @return bool
	 */
	public function is_global( $group ) {
		return in_array( $group, $this->_global_groups, true );
	}

/**
	 * Add non persistent groups.
	 *
	 * @since 1.8
	 * @access public
	 *
	 * @param string|string[] $groups Group(s) to add.
	 * @return void
	 */
	public function add_non_persistent_groups( $groups ) {
		if ( ! is_array( $groups ) ) {
			$groups = [ $groups ];
		}

$this->_non_persistent_groups = array_merge( $this->_non_persistent_groups, $groups );
		$this->_non_persistent_groups = array_unique( $this->_non_persistent_groups );
	}

/**
	 * Check if is in non persistent groups or not.
	 *
	 * @since 1.8
	 * @access public
	 *
	 * @param string $group Group name.
	 * @return bool
	 */
	public function is_non_persistent( $group ) {
		return in_array( $group, $this->_non_persistent_groups, true );
	}
}