public static function backend()
{
if (empty(self::$_backendInstance)) {
switch (self::$_backend) {
case 'memcache':
require_once dirname(__FILE__) . '/Backend/Memcache.php';
$options = array('prefix' => self::$_prefix);
if (!empty(self::$_servers)) {
$options['servers'] = self::$_servers;
}
self::$_backendInstance = new Bouncer_Backend_Memcache($options);
break;
case 'redis':
case 'phpredis':
$options = array('namespace' => self::$_prefix);
if (!empty(self::$_servers)) {
$options['servers'] = array();
foreach (self::$_servers as $host) {
if (strpos($host, '@')) {
list($password, $host) = explode('@', $host);
if (strpos($password, ':')) {
list($username, $password) = explode(':', $password);
}
}
$port = 6379;
if (strpos($host, ':')) {
list($host, $port) = explode(':', $host);
}
$timeout = 1;
$readTimeout = 1;
$options['servers'][] = compact('host', 'port', 'username', 'password', 'timeout', 'readTimeout');
}
}
if (self::$_backend == 'phpredis') {
require_once dirname(__FILE__) . '/Backend/PhpRedis.php';
self::$_backendInstance = new Bouncer_Backend_PhpRedis($options);
} else {
require_once dirname(__FILE__) . '/Backend/Redis.php';
self::$_backendInstance = new Bouncer_Backend_Redis($options);
}
break;
}
}
return self::$_backendInstance;
}
