gaolga When trying to improve your cache rate, it is always best to start with debugging your cache. You can do this under speed > caching in your dashboard. From there, you can see the suggested changes to make to your cache settings.
Another thing to check is if you have any caching set up at your host, Cloudflare, or any caching plugins that could be interfering with Ezoic's caching.
Keep in mind when you make changes to your caching settings that it can take some time for your cache rate to go up!
If you have any other questions let me know!!