azure - Microsoft 令人困惑的 CRON 作业答案

Question

这是 Microsoft AZ-204 练习论文中的问题:

You create a batch routine by using a timer trigger in Azure Functions. You need to configure the batch routine to execute every 15 minutes. Which code segment should you use?

正如您在下面的屏幕截图中看到的，建议的答案是 *0 /15 * * * 1-5

据我所知，CRON 格式的第二个字段是小时，所以它对我来说没有意义。谁能解释一下吗？

Answer 1

函数不使用常规 UNIX cron 表达式。

Azure Functions uses the NCronTab library to interpret NCRONTAB expressions. An NCRONTAB expression is similar to a CRON expression except that it includes an additional sixth field at the beginning to use for time precision in seconds:

{second} {minute} {hour} {day} {month} {day-of-week}

另外:

NCRONTAB expression supports both five field and six field format. The sixth field position is a value for seconds which is placed at the beginning of the expression.

来源:https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-timer?tabs=python-v2%2Cin-process&pivots=programming-language-csharp#ncrontab-expressions