In login process in zend, We store the user information in Zend_Auth, but it creates a problem, the problem is that if user does not make any activity till 15 minutes or more on that site then the user automatically becomes logout. Please tell me, for which reason it occur.
$frontendOptions = array(
'automatic_serialization' => true,
'lifetime' => NULL
);
$backendOptions = array(
// 'cacheDir' => TMP_DIR . DS . 'cache' . DS . 'meta'
);
$cache = Zend_Cache::factory('Core', 'File', $frontendOptions, $backendOptions);
Zend_Db_Table_Abstract::setDefaultMetadataCache($cache);
Is this code is responsible for such condition.