Browser Caching too short

Hello,

I’m new to WPFC, but I’ve noticed that Pagespeed Insights reports the following issue, when Browser caching is set:

“Serve static assets with an efficient cache policy”

It seems that the default 7 days is not long enough according to Pagespeed Insights. In the past I’ve had to set Expires manually to a year to avoid the issue.

Any insight would be appreciated.

Thanks