For each cached element, you need only specify the content you want to cache, any controller action that produces your dynamic content, and a timeout.
对于每个被缓存的元素，只需指定想要缓存的内容、可生成动态内容的任何控制器动作以及超时。
This is because a transaction will time out after it has been active for 120 seconds by default, meaning that you need to have at least 120 seconds of trace data prior to the transaction timeout.
这是因为在缺省情况下事务将会在处于活动状态120秒后超时，这意味着您至少需要在事务超时前120秒钟的跟踪数据。
Once a valid response is received, the timeout variable is cleared, which means that you don't need to worry if your web service times out.
一旦接收到一个有效的响应，那么超时变量就会被清除，这意味着您不需要担心您的Web Services会超时。
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