For example if your s3 bucket is being served behind CloudFront, it is common to set Cache-Control: max-age=300,public to reduce cache TTL, or setting Content-Encoding: gzip for pre-compressed files.
s3cmd has the --add-header parameters for this purpose
Backends which have and haven't got support for --header-upload and --header-download
Backends which are crossed out are not HTTP based and can't support the feature
For example if your s3 bucket is being served behind CloudFront, it is common to set
Cache-Control: max-age=300,publicto reduce cache TTL, or settingContent-Encoding: gzipfor pre-compressed files.s3cmdhas the--add-headerparameters for this purposeBackends which have and haven't got support for
--header-uploadand--header-downloadBackends which are
crossed outare not HTTP based and can't support the featurealiascachechunkercryptftplocalmemorysftpunion