Notification of new S3 objects

Question

I have a scenario where we have many clients uploading to s3.

• What is the best approach to knowing that there is a new file?
• Is it realistic/good idea

Answer 1

Your best option nowadays is using the AWS Lambda service. You can write a Lambda using either node.js javascript, java or Python (probably more options will be added in time). The lambda service allows you to write functions that respond to events from S3 such as file upload. Cost effective, scalable and easy to use.