code/Debug/controllers/UtilController.php
public function flushCacheAction()
    {
        try {
            $this->getService()->flushCache();
            $this->getSession()->addSuccess('Cache flushed.');
        } catch (Exception $e) {
            $message = $this->__('Cache cannot be flushed: %s', $e->getMessage());
            $this->getSession()->addError($message);
        }

        $this->_redirectReferer();
    }
public function flushCacheAction()
    {
        try {
            $this->getService()->flushCache();
            $this->getSession()->addSuccess('Cache flushed.');
        } catch (Exception $e) {
            $message = $this->__('Cache cannot be flushed: %s', $e->getMessage());
            $this->getSession()->addError($message);
        }

        $this->_redirectReferer();
    }
Flushes cache