App engine standard / Node / Automatic scaling - F1 or F2??

[williamsdyyz]

The docs are weird regarding instance_class and automatic_scaling:  https://cloud.google.com/appengine/docs/standard/reference/app-yaml?tab=node.js

The instance class sections says "Note: If instance_class is set to F2 or higher, you can optimize your instances by setting max_concurrent_requests"

But the automatic scaling section says "Optional. Applicable only for applications that use an instance class of F1 or higher."

So... all the auto scaling options apply to F1 except max_concurrent_requests?  Is that actually true and if so, why?

Thanks for any insights

[christianpaula]

Hello @williamsdyyz,

That is correct. The reason behind is F1 doesn't support more than ten concurrent requests while the values higher than 10 are only available for instance classes of F2 or higher.

It says the default for max_concurrent_requests is 10 while F1 can have a maximum of 10 concurrent requests.

Thanks,

Christian

[williamsdyyz]

OK. Thanks for the clarification