Lambda Deployment package fails with size error

Question

Maybe I am missing something obvious but I was wondering why the Code Pipeline is failing on the Code Deploy step even though my outputted artifacts is below the space requirement? My zipped package is 48 MB and my unzipped is 213 MB, both of which are under the 50 MB and 250 MB limits.

The error that I'm getting is:
```
Resource handler returned message: "Code uncompressed size is greater than max allowed size of 272629760. (Service: Lambda, Status Code: 400, Request ID: 42a0e0c4-031a-4481-9a6d-765a662123f5)" (RequestToken: 22cbb818-6658-7473-f6c7-65f1872593ca, HandlerErrorCode: InvalidRequest)```

I tried the following:
- used `npm shrinkwrap`, `npm ci`, and `npm install --production` as well as a combination of the three to get my space under the limit
- copied the package-lock.json of a previous successful pipeline and it still fails
- hardcoding the CodeUri of a previous successful pipeline and it failed

Is there something that I missed? I was thinking of doing the Lambda Layers next but im not sure what that will change since that is used for reducing the size when we are already under the limit.

Answer

Using Lambda Layers won't help in this case because all of your code (including the layers) must be under 250 MB uncompressed. The Lambda service is showing that combined size in the error message.

You might consider using a [container image](https://docs.aws.amazon.com/lambda/latest/dg/images-create.html) instead as they have larger size limits.

Lambda Deployment package fails with size error

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