Jarves\Cache\Backend\Files::doGet PHP Method

    protected function doGet($key)
    {
        $path = $this->getPath($key);
        if (!file_exists($path)) {
            return false;
        }
        $h = fopen($path, 'r');
        $maxTries = 400;
        //wait max. 2 seconds, otherwise force it
        $tries = 0;
        while (!flock($h, LOCK_SH) and $tries <= $maxTries) {
            usleep(1000 * 5);
            //5ms
            $tries++;
        }
        if ($this->useJson) {
            $value = '';
            while (!feof($h)) {
                $value .= fread($h, 8192);
            }
        } else {
            $value = (include $path);
        }
        flock($h, LOCK_UN);
        fclose($h);
        if ($this->useJson) {
            return json_decode($value, true);
        } else {
            return $value;
        }
    }