Developing AWS Lambda Functions Locally in VS Code

n this video, I want to share the approach I use regularly to develop AWS Lambda functions (and other serverless projects) locally in VS Code using the benefits of AWS's secret sauce, SAM.

AWS SAM, or Serverless Application Model, is a framework that makes managing your serverless AWS service easy. Using the CLI was can create Lambda functions locally, test them, update them, and deploy them, all from our favorite code editor (mine being VS Code).

In this video, we'll create a simple AWS Lambda function locally and I'll show you how to manage it all from your local dev environment.

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#developawslambdafunctions #awssam #serverless #awslambda

** Some of the links in this description are affiliate links that I may get a little cut of. Thank you.

[sod]

Awesome instructional video. This way of working helps cut out so much nonsense when it comes to working with lambdas!

[chrismacswan]

Oh my god thank you so much for that MFA script. You are a life saver.

[asifrasool]

Travis, you are just awesome. I had the issue with importing different python dependencies, mainly snowflake and sql alchemy, I tried a lot with layers and didn't want to shift to linux. I watched this video 3 days ago. But I was stuck in installing Docker, SAM CLI, and also I had Federated AWS Account. I fixed everything and came back to this video. You have saved me. Great tutorial and complete explanation. Thank you so much for this great content..

[veganlife]

Hey Travis, best sam tutorial I've came across. deserves the sub

[Usernamesareoutdated]

thank you! I was dreading a new uphill battle, but you turned learning SAM into a water slide :D

[raghavgautam]

Great man! Thank you so much!
You are a great instructor.

[viniciushenrique]

Now this is just amazing. I'll use AWS SAM a lot now, thanks!

Only thing missing from this tutorial I think would be a small intro on managing Lambda Layers with AWS SAM too.

[adityatulsyan]

It was really helpful, please release more such videos. Thank You.

[shantisagargebise]

Very well explained. Easy to understand and grasp.

[rugeneus]

Great! It is very clear explanation and very helpful!

[szemeibon]

Thanks Travis for your great tutorial😃

[ramonpaolomaran]

19:02 and 19:58

You probably know now, but, for the people seeing that now, the AWS SAM CLI, have the command "delete" that delete all resources in the stack that you created.

example:

"$ sam delete <name-stack>"

[thelonious-dxvi]

Cheers, this is by far the best available explanation of this. But I really wish there was a more straightforward means of escape from the horrorshow browser IDE -- i.e. without SAM, CloudFormation, etc. I guess there's manually building and pushing zip files, but that's no bed of roses either. I seem to keep landing back in the console IDE when I just need to get something done with Lambda.

[fabiofusco]

Hi Travis, thanks a lot. Great tutorial. I have a question if you don't mind: how can I import dependencies in the local environment? Right now I use Layers, but they seem to not be imported locally. Thanks a lot!

[kofio]

Thanks Travis, Great Video! BTW - To delete the stack is: sam delete sam-app
This was probably added post your video.

[waldojams]

That's a neat and modern workflow! Wondering how debugging would work though.

Cool thing about a fully functional approach is that it isolates dependencies and work with arguments, which generally make debugging easier. But I have no experience of working with this in a big environment.

Looking forward to commit to use in in a bigger project.

[bordsUK]

Great tutorial. I am wondering what if you want to export existing lambda function and debug it locally in vscode. Would love to see that. Keep up the good work 👍

[aviahh]

Great video it helps a ton.
one question: if I want to do that with some Python libraries, where should I install those libraries, locally in the same folder (in your example "aws-sam")? something like pip install "library name" -t . ?

[mohammedbanabila]

thanks for video but i have question, can be use boto3 in sam app

[RandyL]

Great tutorial! You were super clear and informative.

Question for you: how do you get your terminal command line to bring up the past commands you've entered? That seems super useful. I searched but can't find how to enable it.