Tag: S3

Setting S3 Cache Metadata

By default Amazon’s S3 doesn’t set any Cache Control headers. Even worse, the only way to set them via their S3 management console is file-by-file.

Not exactly scalable.

Until they give us a quick and easy way to do this, here’s a simple Python script using Boto (thanks to Blackpawn).

Note that the script iterates over every object in your buckets, so if you have a ton of objects, it may not be the solution for you.


from boto.s3.connection import S3Connection
connection = S3Connection('aws access key', 'aws secret key')
buckets = connection.get_all_buckets()
for bucket in buckets:
for key in bucket.list():
print('%s' % key)
if key.name.endswith('.jpg'):
contentType = 'image/jpeg'
elif key.name.endswith('.png'):
contentType = 'image/png'
else:
continue
key.metadata.update({
'Content-Type': contentType,
'Cache-Control': 'max-age=864000'
})
key.copy(
key.bucket.name,
key.name,
key.metadata,
preserve_acl=True
)

view raw

s3.py

hosted with ❤ by GitHub