Google App Engine - Always Launched Instance

Question

I want my App Engine to always have one instance. I want to avoid the fact that the first request after 15 minutes of no traffic takes 20 seconds to complete. There is an Always On feature that is mentioned in several places to fix this, but I cannot find it anywhere in App Engine.

I tried to set the min-idle instances to 1, but it still starts a new instance after 15 minutes of no traffic. Any suggestions?

Answer 1

"Always-on" is deprecated (I believe that it is no more). The configurations that currently allow you to do this and more are documented at https://cloud.google.com/appengine/docs/java/modules/ ; for example, if you always want one instance to work, no more, no less, set the default module of your application to manual scaling, with instances set to 1 .

However, automatic scaling with min-idle-instances should also work if you followed the instructions (at the URL I provided)

In order for resident instances to function correctly, you must be sure that heating requests are turned on, and your application processes warm-up requests.

Use, as soon as this URL recommends, the "Availability" column on the "Instance Console Instance" page to check which of your instances are actually resident (as you wish) and not dynamic (i.e. leave after some time just me).

Answer 2

You might want to use the AppEngine managed virtual machine. The application interface is compatible, but you always use a virtual machine. For more information see https://cloud.google.com/appengine/docs/managed-vms .