java - Appengine Backend not triggered from cron

Question

Here's my configuration in backends.xml and cron.xml respectively:

 <backends>
<backend name="score">
    <class>B1</class>
    <instances>2</instances>
    <options>
        <dynamic>true</dynamic>
    </options>
</backend></backends>

and

<cronentries><cron>
    <url>/ProcessingEngine</url>
    <description>Get Posts</description>
    <schedule>every 45 minutes</schedule>
    <target>score</target>
</cron></cronentries>

I configured it this way so as to call the Backend job through cron.xml. But, for some reason, the Backend is not triggered and I don't see any logs that indicate Backend code has been executed. The Cron Tab in Admin section of AppEngine says the cron failed.

Note: I am able to run the Backend job via Admin console's Start button.

Answer 1

原来是一个愚蠢的错误。您唯一需要做的就是在管理控制台中启动后端实例并保持这种状态。仅在必要时将其关闭。