Set Cache-Control on Google Cloud Storage bucket

Question

I have a bucket with public images that are frequently updated and would like to disable the default cache duration of 3600. (E.g. "Cache-Control:private, max-age=0, no-transform")

Can the Cache-Control be set on a file while uploading it with PHP?

Is there a way to set the default Cache-Control for all future files in the bucket (like with ACL that all files are public)?

Right now I can only set it Cache-Control with gsutil and only for files currently on storage.

Answer 1

You can set the Cache-Control while uploading an object - I suggest you use gsutil -D to see an example of the request it generates to do this, and then translate that to PHP:

gsutil -D -h Cache-Control:"Cache-Control:private, max-age=0, no-transform" \
    cp file gs://your-bucket/file

There's no way to set a default Cache-Control for the bucket.