Resident Backend Google App Engine" / _ ah / background" （蟒蛇）

问题描述

有人可以帮助我理解/ _ah / background在谷歌应用引擎（Python）方面的含义。我有一个常驻后端正在运行，而且我正在看到对该端点的请求。它们似乎是由我的代码之外的东西生成的。它们也似乎是由my / _ah / start处理程序处理的。

感谢您提供任何帮助。

解决方案

我相信 / _ ah / background 请求实际上不是HTTP请求，它们是。无论何时需要按照请求对某些内容进行分组，App Engine都使用 / _ ah / background 作为占位符。日志消息。这与我在后台使用后台线程中看到的相符。

（我可以发誓我最近在某个地方的文档中阅读了这篇文章，但是我还没有找到。 ）

Can someone help me understand what "/_ah/background" is in terms of google app engine (Python). I have a resident backend running, and I am seeing requests being made to that endpoint. They appear to be generated by something outside my code. They also appear to be being handled by my /_ah/start handler.

Thanks for any help you can provide.

解决方案

I believe /_ah/background requests aren't actually HTTP requests, they're background threads. App Engine uses /_ah/background as a placeholder wherever it needs to group something by request, e.g. log messages. This matches what I see in my backends that use background threads.

(I could swear I read this in the docs somewhere recently, but I haven't found where yet.)

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