To be honest that's not it - as in my sibling comment it's just attaching the blog onto the site was the fastest way to go, given that I wanted to keep it on the same domain. The product just happens to be built on kubernetes already, use of kube is definitely not for the blog. I'm actually pretty surprised that nginx couldn't handle the traffic to be honest. Even with the fairly low resources I'd allocated it. It's just cached static content served right from nginx you're seeing there. Now I've seen that this setup isn't really appropriate (at least without being very expensive!), I'll spend the time to put it onto a CDN

If you're not worried about the privacy & co. stuff, Cloudflare is free and it's probably the best option for you.