Using Dropzone, the AWS Async project's Simple S3 Client, and Symfony's Messenger component to decouple handling of uploads to S3 and deletion of uploads from S3.

AWS Async: https://async-aws.com/integration/simple-s3.html

Symfony Messenger: https://symfony.com/doc/current/components/messenger.html

Dropzone: https://docs.dropzone.dev/

Uploads

1. Dropzone sends the files to an upload handler route
2. The upload handler moves the files from the PHP temp directory into a different temp directory
3. Once the file is moved, a message is dispatched for a worker to move the temp file to S3 and remove the temp file from the server

Deletes

1. A message is dispatched with the S3 filename (key) that is to be deleted by a worker
2. Then the file record is removed from the database

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Notes:

• This project needs more error handling as most of these actions are fire and forget so if something fails to happen it should be tracked and re-attempted or logged or rolled back to a "known-good" state.
• Need to add download/streaming of files from s3 back to the user