Azure CDN - Enabling HTTP 304 Caching with ETag - Hosted Web Role

Question

We are trying to enable HTTP compression (gzip) and HTTP 304 Caching via ETags on Azure CDN. We already discovered an issue with enabling Azure

Answer 1

It is important to know if you are specifying If-None-Match or If-Match? Based on my experience, most users rely on modification date and GET If-Modified-Since.

ETag is stronger if you need to a cache flag for a given entity with multiple encodings, etc.

For your requirement please use Modified/If-Modified-Since and you don't need variable caching based off encodings and this should work.

More info is here: HttpWebResponse LastModified