Google

Be aware Google Cloud storage sets Cache-Control:public, max-age=3600 header for all files by default. This means files are going to be cached by browsers and proxies so it is going to take up to an hour for folks on the Internet to see an update.

I’ve decided to decrease default max-age value to 600. So I upload blog files with -h option set now:

gsutil -h "Cache-Control:public, max-age=600" rsync -d -r . gs://<bucket_name>/