string(285) "get document error：https://zhidao.baidu.com/search?lm=0&rn=10&pn=0&fr=search&dyTabStr=null&word=%E6%8A%96%E9%9F%B3%E6%B8%85%E9%99%A4%E7%BC%93%E5%AD%98%E5%90%8E%E5%86%85%E5%AD%98%E8%BF%98%E6%98%AF%E5%BE%88%E5%A4%A7 => Failed to connect to 101.89.166.210 port 38089: Connection refused"
抖音清除缓存后内存还是很大
