服务器集群冗余是什么 三招让网站永不掉线,构建高可用服务器集群,三策略确保网站稳定不宕机
What are the three tricks to ensure a website never goes offline and build a highly available server cluster? What are the three strategies to ensure a website is stable and does not crash
以上为机器翻译结果，长、整句建议使用 人工翻译 。