/**
* @return _DevblocksCacheManager
*/
public static function getInstance()
{
if (null == self::$instance) {
self::$instance = new _DevblocksCacheManager();
$options = array('key_prefix' => defined('DEVBLOCKS_CACHE_PREFIX') && DEVBLOCKS_CACHE_PREFIX ? DEVBLOCKS_CACHE_PREFIX : null);
// Shared-memory cache
if ((extension_loaded('memcache') || extension_loaded('memcached')) && defined('DEVBLOCKS_MEMCACHED_SERVERS') && DEVBLOCKS_MEMCACHED_SERVERS) {
$pairs = DevblocksPlatform::parseCsvString(DEVBLOCKS_MEMCACHED_SERVERS);
$servers = array();
if (is_array($pairs) && !empty($pairs)) {
foreach ($pairs as $server) {
list($host, $port) = explode(':', $server);
if (empty($host) || empty($port)) {
continue;
}
$servers[] = array('host' => $host, 'port' => $port);
}
}
$options['servers'] = $servers;
self::$_cacher = new _DevblocksCacheManagerMemcached($options);
}
// Disk-based cache (default)
if (null == self::$_cacher) {
$options['cache_dir'] = APP_TEMP_PATH;
self::$_cacher = new _DevblocksCacheManagerDisk($options);
}
}
return self::$instance;
}
