A programmatic way to alter many s3 objects in many buckets in parallel
Usage:
node list-objects.js --buckets=some-bucket-name,other-bucket > objects.list
node head-blaster.js --file=objects.list --concurrency=3 --operation=./operations/fix-cache-headers.js > output.log
where objects.list is a file like:
bucket-name:key/path
bucket-name:key/path
...
In between listing and modifying is a good time to trim down the list if you only want to affect objects with a certain key prefix or something.
Make new npm modules as needed for different operations, see examples in operations/*.js.