Issues with the ETag in learn performance caching demos #42
Description
I was going through the learn performance modules, and I reached the module related to General HTML performance considerations. The 2nd exercise out of the 4 is not working properly.
The response headers don't show any ETag. For the second module, every request is a fresh request, and I get 200 OK instead of getting 304 for a valid ETag of 1 minute.
I tried running the code on my local machine, and it was fine. But for the live-hosted one, there seems to be an issue.
One possible issue could be related to compression.
