chalice

If you are frustrated by the complexity of packaging Python-based Lambda applications, I highly recommend checking out Chalice: https://github.com/aws/chalice. It's very well engineered and drastically simplifies the process (for example, it handles pre-built wheels properly, so you can cross-compile your Lambda (build and deploy it from a Mac, etc). Actually, we just open-sourced a template for using Lambda with Chalice and Terraform that automates this and many other relevant steps: https://github.com/chanzuckerberg/chalice-app-template. It's not 100% directly applicable to this use case yet, because SAM/CloudFormation templates don't have a good way to manage bucket event subscriptions. But domovoi (https://github.com/kislyuk/domovoi) can manage S3 event subscriptions (direct or bridged through SNS, SQS, or SNS-SQS) in an idempotent d

I've seen a ton of write-ups on the benefits of serverless computing (AWS Lambda, Google Cloud Functions, etc.) and spent a decent amount of time playing around with the Chalice framework [1] on a couple personal projects. I'm currently debating on adopting it for a new project at my day job, but I've encountered some rough edges that have made me realize that, for all of the positives, there are still a lot of negatives. I was curious what issues other people have experienced and what the dealbreakers ended up being. So, effectively, I'm asking HN to convince me to not go serverless :) [0] - https://github.com/aws/chalice

AWS provides their own "Python Serverless Microframework for AWS" called Chalice: https://github.com/aws/chalice I have yet to deploy a production service with it, but the development experience has been positive.

That was interesting. Two questions: 1) Is there a problem with python, or a problem with flask? Isn't this what chalice is for? https://github.com/aws/chalice 2) How are you dealing with cold starts? I learned stuff from this post, but I would have learned more with some background about the workload etc so I could reason about what generalizes and what doesn't.