您可以对Azure功能或存储队列的输出进行评级吗? [英] Can you rate limit an Azure Function or output of a Storage Queue?

问题描述

我有一个由存储队列触发的Python Azure函数，该函数将作业提交给第三方限速API(每分钟1个请求).触发该函数的队列将定期接收一连串消息，因此，我需要一种方法来确保在接收到第一条消息后立即触发该功能，第二条消息后1分钟，第三条消息后2分钟，直到队列为空.

I have a Storage Queue triggered Python Azure Function that submits a job to a third-party rate-limited API (1 request/minute). The queue that triggers the function will periodically receive a burst of messages, so I need a way to ensure that the function will be triggered immediately upon receiving the first message, 1 minute later on the second message, 2 minutes later on the third message, etc. until the queue is empty.

是否可以对队列或函数进行速率限制，所以我每分钟只运行一次函数，直到队列为空?

Is it possible to either rate-limit the queue or the function so I am only running the function once a minute until the queue is empty?

推荐答案

没有办法对存储队列进行速率限制(除了队列自然受到存储事务速率限制的速率限制外，该速率是几个数量级)大于当前所需的速率限制.

There's no way to rate-limit a storage queue (other than the queue naturally being rate-limited by the storage transaction rate limits, which are several orders of magnitude greater than your currently-desired rate-limit).

您可以为Azure函数设置计时器触发器，而不是从队列消息到达时触发Azure函数.这样一来，您可以在计时器上设置1分钟的间隔，例如，您的函数可以在其中读取消息并调用第3方API.

Rather than trigger your Azure function off of queue message arrival, you can set up a timer trigger for your Azure function. This will allow you to set up, say, a 1-minute interval on the timer, where your function can read a message and call the 3rd-party API.

您需要使用以下格式指定一个计时器值，它是一个NCRONTAB表达式:

You'll need to specify a timer value, which is an NCRONTAB expression, with the following format:

{秒} {分钟} {小时} {天} {月} {星期几}

每隔1分钟的表情将如下所示:

An every-1-minute expression will look like:

"0 */1 * * * *"

有关计时器触发器的更多信息，此处.

More info on timer triggers here.

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