Does cloudfront support questionsmarks at URLs to fetch a new resource

Question

We are porting a website to a AWS cloudfront backed infrastructure which serves static resource from an S3 bucket.

We access the resource like this

http://example.com/static/foo.css?hash=1

Our CMS generates a new hash when the files changed (cachebusting).

So we upload the file foo.css to the S3 bucket and access

http://example.com/static/foo.css?hash=2

But still the old contents are displayed. It seems to be cached in cloudfront?

Can this be avoided?

Or does the cms need to be modified?

Answer 1

You have to configure your CloudFront distribution to forward query parameters and use them as part of the cache key. Documented here .