Laravel Vapor. Migrating existing app to serverless. Easy or not?

Laravel vapor

App autoscaling is not a trivial task as it might look. I was really excited when I read about Vapor. I would like to share my experience of playing with this great tool.

Project size

Our project is nearly 650Mb and Lambda has limitations of 250Mb unzipped.

We had a few binaries in our composer dependencies. I tried to remove them but it doesn’t help.

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Also removed all dev dependencies. Make sure that you don’t use any PHPUnit functions in your code. For example: assert() etc.

Next, I found out that vapor supports Lambda layers via docker. It has a limit of up to 10Gb per layer.

That helped. All your need to do is only add this line:

runtime: docker

And create a docker file associated with it. You can use the command

vapor env my-environment — docker

Building assets

We use docker containers for the local development and a simple composer install command won’t work locally.

You have to run a command via docker-compose exec.