Pagespeed insights is complaining about caching (Serve static assets with an efficient cache policy).
All the elemts Admin/Public/GetImage.ashx?Width=640&Height=5... shows a 7 days cache.
I would like to change the 7 days to 30 days or even more...so that the notice stops appearing in PageSpeed.
So far, i have set a value inside Global Settings:
<ImageHandler>
<CacheHours>720</CacheHours>
Also, i have change this line in web.config (one year cache):
<clientCache cacheControlMode="UseMaxAge" cacheControlMaxAge="365.00:00:00" cacheControlCustom="public" />
But still the elements Admin/Public/GetImage.ashx?Width=640&Height=5..... still shows a 7 days cache.
Any ideas?
Thank you!