Cache Issues

Hi,

I am trying to get this working with KeyCDN but seem to be having problems with my cache ratio.

Using the real-time logs in CDN i can see that a page is receiving a cache HIT but then when i retest the same page later on it’s returning a MISS for the same thing that was previously showing a HIT. It’s like KeyCDN is not keeping the assets cached for very long.

I’ve tried numerous things to fix this but nothing seems to work and i keep getting the same results.

I currently have Expire=43200 (1 month) and Max Expire=43200 (1 month) which is what’s confusing me, as i thought once an asset is cached it should stay there for 1 month. But it’s not. I’ve also tried ignoring query strings, but with same effect.

I also have Ignore Cache Control enabled in KeyCDN

Is this something to do with the plugin? Or am i doing something wrong? The status for the assets HIT or MISS is 200, so there doesn’t seem to be an issue retrieving the file.