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This article describes how to create and deploy an application using the Flask framework in AWS Lambda.

1. Create a Lambda function

First, create a new function in the AWS Lambda console and name it​flask-app​​。

2. Prepare the Flask layer

In order to use Flask in Lambda, we need to create a layer that includes the Flask library. Follow these steps:

mkdir python
cd python/
pip3 install flask --target=./
cd ..
zip -r flask.zip python/*
aws s3 cp flask.zip s3://ops-sec/

These commands create a ZIP file containing the Flask library and upload it to your S3 bucket.

3. Configure the Lambda function

In the Lambda function configuration, set the following:

1. Change the timeout to 30 seconds.
2. Add the layer you just created (select from your S3 bucket).

4. Write Lambda function code

Paste the following code into the Lambda function editor:

import json
from flask import request, jsonify, Flask
 
app = Flask(__name__)
 
@app.route('/foo', methods=['POST'])
def foo():
    if not request.data:  # 检测是否有数据
        return jsonify({"error": "Invalid argument"})
    data = json.loads(request.data)
    pr