Google Chrome audit on caching

Question

If I run an audit on my sites with Google Chrome, I get this message in the Leverage browser caching section:

The following resources are missing

Answer 1

3 hour expiry might not be enough "time" for the yslow/page speed stuff and they might complain about it. I have seen this with static content on my sites with 4 hour expiration & yslow (havent tried with google's stuff).

Most of those want versioned static content with LONG expire times (like 1 year); see here