Default Setting of Cache Function

I added 2 domain names in Cloudflare. The first one is like test.a.com providing with web service(.i.e. port 80) and I find cache function is enabled by default. the another one is like sftp.b.com providing with SFTP service(i.e. port 22). I wonder if cache function is enabled or not for sftp.b.com by default.

Cloudflare doesn’t proxy SSH, so caching will not occur for SFTP. If that hostname is set to :orange:, SFTP won’t connect at all.

So, is cache feature only enabled for web services(i.e. 80 & 443) by default? It is not enabled for other services by default, right?

Yes, Cloudflare caches static content served over HTTP/S (no other protocols) by default.