Is it possible to set an instance class for Basic Scaling?

[A. Kong]

When I deploy my app I got this error message:

Instance class F4 is only allowed with the 'automatic' scaling value.

Here is the beginning part of my yaml file

application: app-modular-kong

module: backend

version: "v1-2-3"

runtime: python27

api_version: 1

threadsafe: no

instance_class: F4

basic_scaling:

  max_instances: 10

It is possible to set the instance_class? Is it necessary?

Thanks

[Alex Martelli]

As the table "Scaling Types" under https://cloud.google.com/appengine/docs/python/modules/#Python_Instance_scaling_and_class shows, Basic Scaling is "Configurable by selecting a B1, B2, B4, B4_1G, or B8 instance class" -- so it's definitely possible to set the instance class, just not to F4.

B4 has the same memory, CPU, and cost as F4, currently. I wouldn't say it's necessary to set a different instance class than the default (currently B2), but it's certainly a possibility you can experiment with in order to fine-tune your application's performance and cost.

Alex

Thanks

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