面试官问了一句：「一个下单接口，超时和重试你怎么测？」你几乎没犹豫：「设一个超时时间，超了就报错。」面试官点点头，紧接着追问：「那你怎么在测试里造出『超时』这个场景？超时之后客户端和服务端各自发生了什么？如果客户端自动重试，会不会导致用户被重复下单？」——到这儿，很多人就卡住了。 这道题几乎每场测试岗面试都会以某种形式出现。它考的从来不是「你知不知道有超时这回事」，而是你能不能把超时、重试、幂等串 ...

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