Concurrency and scaling in GCP - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the instance class in a Google App Engine service.

GCP

instance_class: [1]

Drag options to blanks, or click blank then click option'

Aauto

Bmanual

Cstandard

DF2

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'standard' which is a service environment, not an instance class.

Using 'auto' or 'manual' which are scaling types, not instance classes.

The instance_class defines the machine type for App Engine instances, such as F2 for a specific instance size.

2fill in blank

medium

Complete the code to set automatic scaling in App Engine.

GCP

automatic_scaling:
  max_instances: [1]

Drag options to blanks, or click blank then click option'

A10

B5

C0

Dunlimited

Attempts:

3 left

💡 Hint

Common Mistakes

Setting max_instances to 0 disables instances, causing errors.

Using 'unlimited' is not a valid numeric value.

The max_instances property limits the maximum number of instances App Engine can create automatically. Setting it to 5 limits scaling to 5 instances.

3fill in blank

hard

Fix the error in the Cloud Run service configuration to allow concurrency of 80 requests per instance.

GCP

concurrency: [1]

Drag options to blanks, or click blank then click option'

A80

B1

C1000

D0

Attempts:

3 left

💡 Hint

Common Mistakes

Setting concurrency to 0 disables concurrency, causing errors.

Using 1 disables concurrency, allowing only one request at a time.

Setting concurrency to 80 allows each Cloud Run instance to handle up to 80 requests at the same time, improving resource use.

4fill in blank

hard

Fill both blanks to configure App Engine to use manual scaling with 3 instances.

GCP

manual_scaling:
  instances: [1]
env: [2]

Drag options to blanks, or click blank then click option'

A3

Bstandard

Cflexible

Dauto

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'auto' environment which is not valid.

Setting instances to a non-integer value.

Manual scaling requires specifying the number of instances (3) and is typically used with the standard environment.

5fill in blank

hard

Fill all three blanks to create a Cloud Run service with max instances 5, concurrency 10, and CPU always allocated.

GCP

apiVersion: serving.knative.dev/v1
kind: Service
metadata:
  name: my-service
spec:
  template:
    spec:
      containerConcurrency: [1]
      container:
        image: gcr.io/my-project/my-image
        resources:
          limits:
            cpu: 1
        env:
          - name: CPU_ALWAYS_ON
            value: "[2]"
      maxScale: [3]

Drag options to blanks, or click blank then click option'

A5

Btrue

C10

Dfalse

Attempts:

3 left

💡 Hint

Common Mistakes

Mixing up concurrency and maxScale values.

Using 'false' for CPU_ALWAYS_ON disables always-on CPU.

containerConcurrency sets concurrency to 10, CPU_ALWAYS_ON environment variable is set to true to keep CPU allocated, and maxScale limits max instances to 5.