Exam AWS Certified Developer - Associate DVA-C02 topic 1 question 127 discussion

Create a Lambda layer to store the external library. Configure the Lambda function to use the layer. This will allow the developer to make the external library available to the Lambda execution environment without having to include it in the Lambda package, which will reduce the Lambda package space. Using a Lambda layer is a simple and straightforward solution that requires minimal operational overhead.

Layers are managed separately from the Lambda function. They reduce the size of the deployment package. Layers are easy to use, and there is no need for complex infrastructure or manual management.

Option B is correct because it is straightforward with lesser operation overhead than managing layers. Option A and C are incorrect. While Option A approach allows you to separate library from your function code, it introduces some operational overhead in managing layers. Option C is simple but doesn't separate library from your function code.

This appear at 17 Jun exam

A is the correct answer.

You can add up to five layers to a Lambda function. The total unzipped size of the function and all layers cannot exceed the unzipped deployment package size quota of 250 MB. For more information, see Lambda quotas.

A. Create a Lambda layer to store the external library. Configure the Lambda function to use the layer: This is the most suitable solution. Lambda layers allow you to include libraries and other dependencies without including them in the deployment package of your Lambda function. By creating a layer with the external library and configuring the Lambda function to use this layer, the developer can easily manage and update the library independently of the Lambda function code, reducing the package size and operational overhead.

One lambda layer only allows 50 mb for storage. The file is 100 MB. So I will vote for D unless the library can break down into less than 5 layers.

By creating a Lambda layer, you can separate the external library from the Lambda function code itself and make it available to multiple functions. This approach offers the following benefits:

https://docs.aws.amazon.com/lambda/latest/dg/configuration-layers.html