Lambda |top| Download S3 File To Tmp May 2026

If you'd like to see how to or need a Node.js version of this script, let me know! AI responses may include mistakes. Learn more

Before writing code, it is important to understand the environment:

This script takes a file from S3 and saves it to a specific path in /tmp . lambda download s3 file to tmp

🚀 If you are processing large video files or machine learning models, go to Configuration > General Configuration in the Lambda console and edit the Ephemeral storage setting to match your needs. Common Troubleshooting

Files in /tmp may persist if the Lambda container is reused (a "warm start"). Always clean up files if you are processing sensitive data. Prerequisites To follow this guide, ensure you have: An S3 Bucket with a file to download. If you'd like to see how to or need a Node

The library (included by default in the Lambda Python runtime). The Implementation: Python and Boto3

Here is a comprehensive guide on how to download S3 files to the /tmp folder using Python and Boto3. Understanding the /tmp Directory 🚀 If you are processing large video files

By default, you get 512 MB of space. However, you can increase this up to 10 GB in the function configuration.

This happens if you try to write to the root directory or /var/task . Always prefix your path with /tmp/ .

Hardcoding filenames is rarely ideal. Use os.path.basename to keep the original filename.