Keeping Instances - appengine/endpoints-frameworks-v2/backend

[alistairsykes]

In which file did you encounter the issue?

https://github.com/GoogleCloudPlatform/java-docs-samples/tree/master/appengine/endpoints-frameworks-v2/backend

Did you change the file? If so, how?

No - except to change the project id

Describe the issue

I ran this example project on a app engine project, and after _ah/start in order to handle my request it starts an instance. That instance never seems to stop of its own accord. I thought it was supposed to given its using the basic-scaling setting. Is there something wrong, or have I misunderstood the behaviour its supposed to exhibit.

[frankyn]

Pinging @tangiel Hey Daniel, do you know why AppEngine Standard wouldn't scale down? I'm not quite sure why it wouldn't scale down.

[tangiel]

It's a current known issue for basic scaling--background threads seem to prevent termination of instances.

[frankyn]

Is there a known workaround?

[tangiel]

You can use automatic scaling. If your traffic is extremely low, then metrics may not be totally accurate in automatic scaling, but it should allow instances to shut down.

[kurtisvg]

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