https://blog.wongcw.com/2020/07/03/twitter%e6%b8%85%e7%90%86%e6%b6%89%e5%a5%b4%e9%9a%b8%e5%88%b6%e7%b7%a8%e7%a8%8b%e7%94%a8%e8%a9%9e%ef%bc%9amaster%e3%80%81slave%e7%ad%89%e8%a2%ab%e7%a6%81%e7%94%a8/