I'm using amazon s3 to host assets for my site (mainly images). At the moment when a user uploads an image via a form, the php script uploads the image directly to my bucket on s3.
I would like to keep a local copy of every image that's uploaded so that if amazon decides to drop me as a customer for whatever reason, I will at least have all my images to backup from and not have my site be forever lost.
Right now I am doing manual backups by downloading all the images that were uploaded at the end of each day via the Control Panel on the AWS site. I'm looking for a better automated way to achieve this.
I'm sure there are others that also keep a local copy of assets and use amazon to host just for the CDN benefits. What method/script or tool do you guys use to achieve this?