追踪点可以让您追踪程序的执行，而不会中断程序。
Tracepoints enable you to trace execution of your program without breaking.
如果有一个成员(我们称为“节点”)宕机，需要立即通知其他节点，从而让应用程序和客户端进行故障转移，而不会中断服务。
If a member (which we will call "node") goes down, the other nodes need to be informed immediately so that applications and clients can fail-over without disruption.
与传统的页面请求不同的是，调用不会中断用户体验，而浏览器在等待响应时也不会暂停。
Unlike a typical page request, the call doesn't interrupt the user experience, and the browser doesn't pause while waiting for the response.
应用推荐