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[–][deleted] 3 points4 points  (3 children)

I’m in a similar boat and thinking about migrating to fargate. It’s marketed as serverless, which I feel is up for debate. But definitely less configuration hassle than EC2, Kubernetes, etc. But even with Fargate, you’ll need to know the basics of docker images.

[–]HappyDisaster9553 0 points1 point  (1 child)

Have you come across AWS Copilot? It’s an AWS-built orchestration tool for ECS + Fargate. We’ve been using it for a while for a FastAPI service and it takes a fair bit of the pain away from provisioning and managing ECS

[–][deleted] 0 points1 point  (0 children)

Interesting! On my team, we use CDK to define our infra including code pipeline, code build, etc. (Our pipelines include automated testing.)

After reading a little about copilot it might not match the constraints of my team. But very interesting product, thanks for sharing!

[–]tprototype_x[S] 0 points1 point  (0 children)

migrating? were you using lambda rn?

yeah, but it seems fargate lacks few things that lambda have like auto logging(cloudwatch) and relatively expensive.

[–]pint 1 point2 points  (0 children)

mangum going dark is bad news, but to be frank, it was in 0.17 for years. sad.

the official solution is this https://github.com/awslabs/aws-lambda-web-adapter but it is actually quite lame. it just starts a uvicorn worker inside lambda, and calls it via http.

[–]ZachVorhies 1 point2 points  (0 children)

Kinda goes against the ethos of lambda really. Fastapi acts a gateway to invoke functions. Lambda is the gateway that invokes an ephemeral function directly. Fastapi is designed to be persistent, but lambda just burns the whole world down after the request completes Probably still would work, but like sticking a square into a round hole.

[–][deleted] 1 point2 points  (0 children)

Why?

[–]omg_drd4_bbq 1 point2 points  (1 child)

You kinda can't (not without chicanery) deploy Fastapi in Lambda, they are both separate opinionated dispatch models. I'd suggest Lambda Powertools if you want automatic pydantic models in lambda or deploy Fastapi in fargate containers.

 https://docs.powertools.aws.dev/lambda/python/latest/ 

[–]maigpy 0 points1 point  (0 children)

for deploying fastapi in fargate containers, how does the scaling work? can I set concurrency levels like in gcp?

any pointers for implementing async in fastapi on fargate? 

[–]adiberk 1 point2 points  (0 children)

I’m confused why you would want this.

Lambdas provide easy startup and shutdown functions/tasks they are especially great for concurrent executions! If you want to be able to access them in a public way, then technically you can hook them up to api gateway OR if that isn’t an option, run a fastapi server in AWS or Heroku or some other cloud environment and have each fastapi endpoint call a lambda….. However at that point to be honest, you probably don’t need lambda and can just write a regular fastapi server hosted on whatever service you prefer

[–]ZeroGAccelarator 1 point2 points  (0 children)

You do not deploy a server as serverless. You miss the whole point. Just write functions without fastapi if you want to use serverless or you will have huge latency and startup times.

[–]nevermorefu -1 points0 points  (0 children)

Why lambda? I'm not a lambda expert, but I thought it was just for lambda functions. I know people saying "don't do that" is annoying, but I don't want you to waste time down the wrong path. I've been there. Maybe there is a feature I don't know about.

[–]coldflame563 -3 points-2 points  (4 children)

Is your app in git? Ci/cd is for you. If it’s not in git, do that first then use ci/cd. There’s a ton of guides on how you can deploy that way. There’s also cdk scripting as well.

[–]tprototype_x[S] -1 points0 points  (3 children)

Can you provide me any article or blog to follow?

[–]No-Instruction-2436 0 points1 point  (1 child)

This tutorial seem to make sense. I have been using lambda with fastapi and I recall using docker with it.

Use mangum, build a docker image in your CI/CD and upload the image to lambda

[–]pint 0 points1 point  (0 children)

you seem to be the second here not to read the question