Do I have caching for subdomains?
Yes, all three caching options included in our SuperCacher are available for your subdomains too.
NGINX Direct Delivery is switched on by default for any subdomain you create, including your staging copies.
Dynamic Cache is switched on by default for any subdomain domain you create, except for staging copies since we do not recommend using caching on development websites.
As for the Memcached, you need to switch it on manually from Site Tools and then connect your application to it. It does not matter if the application is accessed by your primary or a subdomain, as long as it is part of this site hosting space.
You can access and manage your SuperCacher in Site Tools > Speed > Caching.