Lambda layers for shared code in AWS - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to specify the runtime for the Lambda layer.

AWS

CompatibleRuntimes:
  - [1]

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

Ajava11

Bnodejs14.x

Cpython3.9

Dgo1.x

Attempts:

3 left

💡 Hint

Common Mistakes

Choosing a runtime that does not match the layer code language.

Leaving the runtime field empty.

The runtime must match the language used in the Lambda layer code. Here, python3.9 is correct for Python code.

2fill in blank

medium

Complete the code to specify the content location of the Lambda layer.

AWS

Content:
  S3Bucket: my-layer-bucket
  S3Key: [1]

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Alambda.zip

Blayer.zip

Ccode.zip

Dfunction.zip

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong zip file name.

Not specifying the S3Key at all.

The S3Key should point to the zip file containing the Lambda layer code. Here, layer.zip is the correct file name.

3fill in blank

hard

Fix the error in the layer version declaration by completing the missing field.

AWS

Type: AWS::Lambda::LayerVersion
Properties:
  LayerName: shared-utils
  [1]:
    - python3.9
  Content:
    S3Bucket: my-layer-bucket
    S3Key: layer.zip

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

ACompatibleRuntimes

BRuntime

CRuntimes

DCompatibleRuntime

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'Runtime' instead of 'CompatibleRuntimes'.

Using singular form instead of plural.

The correct property to specify supported runtimes for a Lambda layer is CompatibleRuntimes, which is a list of runtimes.

4fill in blank

hard

Fill both blanks to correctly attach the Lambda layer to a function.

AWS

Resources:
  MyFunction:
    Type: AWS::Lambda::Function
    Properties:
      FunctionName: my-function
      Handler: index.handler
      Runtime: python3.9
      Layers:
        - [1]
      Code:
        S3Bucket: my-function-bucket
        S3Key: function.zip

  SharedLayer:
    Type: AWS::Lambda::LayerVersion
    Properties:
      LayerName: shared-utils
      CompatibleRuntimes:
        - [2]
      Content:
        S3Bucket: my-layer-bucket
        S3Key: layer.zip

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

Aarn:aws:lambda:us-east-1:123456789012:layer:shared-utils:1

Bpython3.9

Cnodejs14.x

Darn:aws:lambda:us-east-1:123456789012:layer:shared-utils:2

Attempts:

3 left

💡 Hint

Common Mistakes

Using the wrong ARN version number.

Mismatching runtimes between function and layer.

The Lambda function's Layers property requires the ARN of the layer version. The layer's CompatibleRuntimes must include the runtime used by the function, here python3.9.

5fill in blank

hard

Fill all three blanks to define a Lambda layer with description, compatible runtimes, and content.

AWS

Resources:
  SharedLayer:
    Type: AWS::Lambda::LayerVersion
    Properties:
      LayerName: shared-utils
      Description: [1]
      CompatibleRuntimes:
        - [2]
      Content:
        S3Bucket: my-layer-bucket
        S3Key: [3]

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

ACommon utilities for Lambda functions

Bpython3.9

Clayer.zip

DShared code for multiple Lambdas

Attempts:

3 left

💡 Hint

Common Mistakes

Using an incorrect or missing description.

Mismatching runtime versions.

Incorrect S3Key filename.

The Description should clearly state the purpose of the layer. The CompatibleRuntimes must list the runtime used, and S3Key points to the zip file with the layer code.