We've just added a handy new feature for those of you that deploy your code to Amazon S3 buckets with DeployHQ - the ability to add custom request headers to your S3 configuration that will include useful metadata along with files that are uploaded.
From now on, when you're configuring your buckets you'll find a new S3 Request Headers section below the bucket configuration. You can add any headers you like here, in a Header Key -> Header Value -> Pattern format.
This is intended to be as flexible as possible, so you can do anything from adding a Cache-Control header that is only added to a specific file, or a Content-Disposition header for all files of a certain type.
Once you've configured these, the headers will be sent with any files matching the set pattern.
Incidentally, we're also sponsoring Wordcamp Brighton this weekend - if you happen to be there, pop by our stand and say Hi!