I read numerous articles on the subject today. Many of the articles are 4yrs + old. The current articles have conflicting views from "experts".
For example, a few authors recommended turning off both Last Modified and ETags thereby eliminating those request and boosting performance. The problem then is you are relying on your Expires date and if you make a change sooner you will have a user who needs to manually clear cache to receive updates.
Basically what I would like to know is...does XF have a recommended setup to Leverage Browser Caching to optimize our site's performance. If not, what setup is used for this site?