What are AWS Lambda layers and how do I use them?

What are AWS Lambda layers and how do I use them?

AWS Lambda layers are a way to package and share libraries, dependencies, and other function code across multiple Lambda functions. You can use them to manage your code more efficiently.

Can you give me an example of how to create a Lambda layer?

Sure! To create a Lambda layer, you first need to package your code and dependencies into a .zip file. Then, you can use the AWS Management Console or AWS CLI to create a new layer and upload your .zip file.

How do I add a layer to my existing Lambda function?

You can add a layer to your Lambda function by going to the function's configuration in the AWS Management Console, selecting 'Layers', and then adding the desired layer from the list.

Are there any limitations on the size of a Lambda layer?

Yes, each Lambda layer can be up to 250 MB in size when unzipped, and you can include up to 5 layers in a single Lambda function.