[nijave]

Depending on the content and software stack, caching might be a fairly easy option. For instance, Wordpress W3 Total Cache used to be pretty easy to configure and could easily bring a small VPS from 6-10req/sec to 100-200req/sec.

Also some solutions for generating static content sites instead of "dynamic" CMS where they store everything in a DB

If it's new, I'd say the easiest option is start with a content hosting system that has built-in caching (assuming that exists for what you're trying to deploy)