public function getCache($frontendOptions = null, $backendOptions = null, $backendName = null)
{
if (null === $this->_cache) {
parent::getCache($frontendOptions, $backendOptions, $backendName);
//Each user have his own cache
$identity = Centurion_Auth::getInstance()->getIdentity();
$this->_cache->setCacheSuffix(sprintf('user_%d', $identity === null ? 0 : $identity->id));
}
return $this->_cache;
}