Configuration for cache revalidtion


I have a Page Rule to make a custom configuration for one of subdomain with the below configuration:

SSL: Full, Web Application Firewall: On, Auto Minify: HTML, CSS & JS, Rocket Loader: Off, Cache Level: Standard, Email Obfuscation: Off, Origin Cache Control: On

According to the documentation here: it should cache but should revalidate each time when user send request, why it is not like that?

Thank you in advance