Download [verified] File From S3 In Lambda -

If the file is small (e.g., a JSON config or a small text file), you can stream the content directly into a variable without ever writing it to disk. 3. Implementation (Python & Boto3) Method 1: Downloading to /tmp

import boto3 s3 = boto3.client('s3') def lambda_handler(event, context): bucket_name = 'my-source-bucket' file_key = 'config.json' response = s3.get_object(Bucket=bucket_name, Key=file_key) file_content = response['Body'].read().decode('utf-8') print("File content loaded into memory.") return file_content Use code with caution. 4. Key Considerations for Production download file from s3 in lambda

Usually 512 MB by default (configurable up to 10 GB). If the file is small (e

{ "Effect": "Allow", "Action": "s3:GetObject", "Resource": "arn:aws:s3:::your-bucket-name/*" } Use code with caution. 2. Choosing Your Download Strategy If the file is small (e.g.

Most developers automate this by setting an S3 Trigger. This passes the bucket name and key directly into the event object, so you don't have to hardcode them.