By default Amazon’s S3 doesn’t set any Cache Control headers. Even worse, the only way to set them via their S3 management console is file-by-file.
Not exactly scalable.
Until they give us a quick and easy way to do this, here’s a simple Python script using Boto (thanks to Blackpawn).
Note that the script iterates over every object in your buckets, so if you have a ton of objects, it may not be the solution for you.
