Lambda

Do you want a simple way to deploy an python FastAPI in AWS Lambda ? There is an simple way to do this with Magnum. First, let’s add FastAPI, magnum and SAM cli, in requirements.txt file: fastapi mangum aws-sam-cli Next, let’s code a simple FastAPI sample app: from fastapi import FastAPI from mangum import Mangum app = FastAPI() @app.get("/high-scores") async def high_scores(): return {"scores": [100, 200, 300]} @app.post("/insert-score") async def insert_score(data: dict): return {"status": "success", "data": data} lambda_handler = Mangum(app, lifespan="off") if __name__ == "__main__": import uvicorn uvicorn....

Are you struggling with a frontend application that wants to use a backend AWS Lambda API ? Do you have the next CORS problem: Request header field content-type is not allowed by Access-Control-Allow-Headers in preflight response The solution is simple: implement HTTP OPTIONS method respond with the next access control headers : Access-Control-Allow-Origin, Access-Control-Allow-Headers, Access-Control-Allow-Methods For example in python you can do something like this: def return_200(): return { 'statusCode': 200, 'headers': { 'Access-Control-Allow-Origin': '*', 'Access-Control-Allow-Methods': 'GET,HEAD,OPTIONS,POST,PUT', 'Access-Control-Allow-Headers': 'Origin, X-Requested-With, Content-Type, Accept, Authorization', 'Content-Type': 'application/json' }, 'body': json....