public function init()
{
$this->module_name = "cache";
$this->module_position = 1;
$this->version = 2.229;
// 2.229 - 2014-07-28 - menu generation speed improvement
// 2.228 - 2014-05-12 - cache bug fixing
// 2.227 - 2013-10-02 - cache bug fixing
// 2.226 - 2013-09-12 - hopefully a BIG new speed improvement - change advanced cache_enabled to 1
// 2.225 - 2013-09-12 - debug_cache advanced option added
// 2.224 - 2013-09-10 - dashboard speed fix
// 2.223 - 2013-09-08 - cache size fix
// 2.222 - 2013-09-06 - cache_objects configuration variable (not cache_object)
// 2.221 - 2013-09-03 - cache improvements and bug fixing
// 2.22 - 2013-08-31 - cache and speed improvements
// 2.21 - 2013-08-30 - better memcache support
// 2.2 - 2013-08-30 - starting work on memcache support
// version bug fix? maybe?
// use memcache if it exists
if (class_exists('Memcache', false) && module_config::c('cache_enabled', 1) && module_config::c('memcache_active', 0)) {
self::$_memcache_instance = new Memcache();
if (self::$_memcache_instance->connect(module_config::c('memcache_address', '127.0.0.1'), module_config::c('memcache_port', '11211'))) {
//module_config::c('memcache_address','localhost'), )){
self::$_memcache_prefix = md5(session_id() . _UCM_SECRET . _DB_PREFIX . _DB_NAME . _DB_USER . _DB_PASS);
// what version of information are we requesting (inremented each time something is deleted, inserted or updated)
// bad, but cannot think of any other easy quick way to invalidate caches upon updates
self::$_memcache_version = self::$_memcache_instance->get(self::$_memcache_prefix . 'version');
if (!self::$_memcache_version) {
self::$_memcache_version = 1;
}
self::$_use_memcache = true;
}
} else {
if (module_config::c('cache_enabled', 1) && $this->db_table_exists('cache_store')) {
$sql = "SELECT * FROM `" . _DB_PREFIX . "cache_store` WHERE expire_time > " . time();
foreach (qa($sql) as $res) {
if (!isset(self::$_db_cache[$res['cache_group']])) {
self::$_db_cache[$res['cache_group']] = array();
}
self::$_db_cache[$res['cache_group']][$res['cache_key']] = $res['cache_data'];
}
register_shutdown_function('module_cache::shutdown_write_cached_data');
}
}
// change to low number by default
if (module_config::c('cache_objects', 120) == 3600) {
module_config::save_config('cache_objects', 120);
}
if (module_config::c('cache_enabled', 1) && $this->db_table_exists('cache')) {
$sql = "SELECT * FROM `" . _DB_PREFIX . "cache`";
foreach (qa($sql) as $r) {
self::$_cache_expiry[$r['cache_group']] = $r['expire_time'];
}
}
}
